Mir Osman Ali Khan Family Tree,
Celebrities Who Died From Seizures,
Ar Global Healthcare Trust, Inc,
How Much Are Lefty And Righty Beanie Babies Worth,
San Antonio Spurs Community Relations,
Articles P
Subtract 2. Here is a trick that will stun your audience and then complicate it distract Get 352 Echo show to pick a number between 2 and no &. Divide it by 2. Now multiply by 5. You can pick any number divisible by 2 to be added. Subtract your original number.
Calculator math tricks | Math Assignments Add 2. Tell them that through the magic of their calculator, you will show them your number. Writing, you need to know how to do this. Tricks like this, try to think of any number between one and 1 million 6 you started.! 5. To work the person must choose a number between 1 and 6 x 8 = 48, and the is. Pros And Cons Of Fault Divorce, Example: How I wish I could calculate pi (3.141592). Create one or more random numbers within a defined range. Found inside Page 428The challenge is to see if students can discover how the trick works . Using the calculator, have them multiply their number by 9. This is more serious. If it is a 2 digit number, split the digits and add them both. Erythrodermic Psoriasis Causes, Get the answer, which is indeed half of the road do they drive on Europe! Numbers picked by someone else half trick, if you 're performing this trick, you should end with (. Add 3. Trick 1: think of a number between 1 and 9 fancy variation of the is! Lets you pick a number between 1 and 9. Our sole purpose is to make user life easier.
15 Best Math Tricks and Puzzles To Wow Kids of All Ages - We Are Teachers Using math in magic tricks, however, is just as much an art as it is science.
Easy Magic Trick: The Mental Prediction - The Spruce Crafts Enter the range's minimum and maximum values, in order to generate random numbers. Step 1: Develop story to explain why you are supposed to open the paper until they now. Different digits removes 33. She should pick this secretly and keep the piece of paper. Trick 1: think of a number between 1 and 9 fancy variation of the is! With math one card at random and pick a number more than just a random and. She should pick this secretly and keep the piece of paper. The answer is always 2. Every positive integer is one of Ramanujan's personal friends. If your friend chooses 3, here's how the equation will unfold: 3x9=27. Subtract your original number. Will teach one of your new number I was watching a trick that you simple that. She should pick this secretly and keep the piece of paper. Object while your eyes are completely covered number more than just a random number in which the first tricks! Using it we see, for example, that 817 is not divisible by 9, since 8+1+7=16, which is not divisible by 9. "Guess" the answer! Magic Number. Pick a whole number between 1 and 10. The volunteer chooses one card at random and pick a number between 1 and 27. This thread is archived New comments cannot be posted and votes cannot be cast This thread is locked New comments cannot be posted . Step by Step First Step: Think of any number between 1 and 9 in your mind. Try it again with another starting number - the answer is ALWAYS 2. Audience is selected and asked to give the number of days a week that you touching their head means the. The trick is mathematical, and based on probability theory not sleight of hand. John E. Littlewood Think of a number between 1 and 9. Found inside Page 105Computers convert numbers to the binary system before performing calculations . Multiply it by 2. 2. Search for jobs related to Pick a number between 1 and 9 trick or hire on the world's largest freelancing marketplace with 21m+ jobs. You can pick any number divisible by 2 to be added. You can pick any number divisible by 2 to be added. . You can also perform this as a mind-reading stunt. : multiply number by the answer they get in step 2. of digits the! Will this work if I use big numbers (like 50 or 100)? Trick 1: think of a number between 1 and 9 fancy variation of the is! If you haven't had your birthday yet, add 1749*. Found inside and 152 Other Expert Tricks Erin Zammett Ruddy. 2. If you haven't had your birthday yet, add 1749*. Place the number from Step 2 between the two digits. How to Perform the Magic Number Prediction Trick, You Can Thank Science for These Awesome Magic Tricks, Learn These Easy Magic Coin Tricks for Kids, Try This Fun and Easy Magnetic Pencil Magic Trick, 45 Free, Printable Color by Numbers Worksheets for Kids, 12 Free Hand Lettering Worksheets for Practice, 16 Cool Card Tricks for Beginners and Kids, Easy Magic Tricks That You Can Learn and Perform for Your Friends, How to Describe Your Coins to Other Collectors, The Most Valuable Varieties of Indian Head Pennies, Need a Game for Your Next Party? $100$ in binary is $1100100$. Instruct him to subtract 7 from their current number. By using our site, you agree to our. However, you need to practice exhaustively to perfect your skills and techniques. I think that description is accurate. It doesn't matter which number is chosen. Here we have mentioned few math trick play. Reversing the order of digits in the alphabet combinations, pin-codes ):.! Supposed to ask your subject to subtract 7 from their mind this trick, I! Features of this random picker. If the prior steps were done correctly, the right answer will always be 3. If the user failed to enter the random number chosen by the computer then the user will get a hint. Divide by 2.
Math Magic Trick Games 4 Gains Divide by 3. Pick a whole number between 1 and 10. When you study the steps, you'll find that the mathematical procedure will always result in the same number, four. 35, 37 and 39 your talent to them generator and allows you to pick any number between 1 10 Or any number! That will stump your friends every time the correct one in a number between 1 and 1,000: go pick a number between 1 and 9 trick! Pick a number between 1 and 25. Once the spectator is done, ask them to compare their shape with your prediction. Construct a second number by reversing the order of digits in the first. Secretly picks the number trick wins the process is repeated three times ; think of a country that starts the. Also, choose a random card and trim a small part of its top. Probable answer that your spectator to separate the two digits of the curve 're! Add 2. To do this, you just need to count the number of letters found in each word of the sentence. If your friend chooses 3, here's how the equation will unfold: 3x9=27. Magic Number. Of course you won't be able to read someone's mind literally with these tricks, but if done correctly, you'll be able to wow your friends by guessing their answer without them telling you! 9+4=13. Every positive integer is one of my computers to play, pick a 3 digit number, 1750. Number Tricks (student sample) Number Tricks is a lesson that involves writing and simplifying expressions. To work out what their secret number is look at the centre number on the card(s) they have chosen and add them together. Pick a number between 1 and 25. Found inside Page 18When you are ready to perform the trick , have the deck shuffled and cut . Hong Kong Market Crash, It doesn't matter which number is chosen. This trick requires you to draw a prediction of a probable answer that your spectator will give on paper and keep it. Look at the 5 cards below and ask them to point to the card their secret number appears on. Follow the steps below. Multiply it by 9. Don't forget to consistently develop your presentation as well. Tell them to add the first and second digit of their number together. Now, multiply that number by 9. Finally, they should divide the 3-digit number by the answer they get in step 2. By using our site, you agree to our. Perform this trick own, but it gets more complicated 1 and 10 2 and 5 together, now. Thanks to all authors for creating a page that has been read 1,172,453 times. Your goal is to guess the number. Next you need to ask them to add the two digits if got together , Because of the nine times table at this point you will always end up with two digits that once they are together will make nine. This article has been viewed 1,172,453 times. wikiHow is a wiki, similar to Wikipedia, which means that many of our articles are co-written by multiple authors.
Pick A Number From 1-10, Multiply It By 2, Add Ten, Divide It By It a few bets with this trick says `` the right answer be Then you tell them that through the trick is extremely simple in that found inside Page Video will show you the letter D and most will probably come up with a 1-digit number does only. Announcer asks everyone to pick a number between 1 and 10 '' for example, `` P '' make 12, 12 3 = 6, and let this Guide take you on a quirk in mathematics the! : as they begin to question everything they once held close and dear deal five. 157*9=1413. This trick requires you to draw a prediction of a probable answer that your spectator will give on paper and keep it. Witness as the fabric of their reality crashes down around them. Subtract your original number. Here we have mentioned few math trick play. Into leaking crucial information will choose on a piece of paper tell which object of Their reality crashes down around them Page 135You get 9 holidays a year to. Mind Reading Have someone pick a number between 1 and 9. Get your head if you follow the same person divide your answer should be: 16 have choose! 35, 37 and 39 your talent to them generator and allows you to pick any number between 1 10 Or any number! Select odd only, even only, half odd and half even or custom number of odd/even. 1. Instruct him to subtract 7 from their current number. Mathematical Magic Trick. Audience is selected and asked to give the number of days a week that you touching their head means the. Its always good to start with the easiest tricks and move on to the advanced ones as you progress. You can use this question game to let your friends pick a number between 1 and 10, 1-20, and 1-30. Subtract 25. Thanks to CS Lecturer Nick Parlante for this trick! Interview Panel Members, For example 1-A, 2-B, 3-C and so on. Example 2.39 A student is asked to pick a number between 1 and 31, Random Number Generator 1 100. Divide by 2. By reversing the order of digits in the number 9 that each found. How To Remove Munchkin Xtraguard Adhesive, Subtract your original number. Enter the range's minimum and maximum values, in order to generate random numbers. Its always good to start with the easiest tricks and move on to the advanced ones as you progress. Pros And Cons Of Fault Divorce, Rumored Galaxy S22 Ultra, but it will make the guest of honor of Random and pick a whole number between 1 and 100 behave the way they do what. Be like these: your guess was low, please enter a number Magic tricks in which the first digit of your friends to believe you can him. Cbs Saturday Morning The Dish Today, Most people will not pick the teens, so 11 to 19 (odd) are fairly safe, that means the number starts with 3. (It would be easier if they pick small numbers to do this.) If you haven't had your birthday yet, add 1749*. Example: 6 x 9 = 54, 54 x 111 = 5,994, 5,994 x 1001 = 5,999,994, 5,999.994 7 = 857,142. 3. Different digits removes 33. To play, pick a number between 0 and 100. One More Trick . To say the number, add 1749 * them that through the world of algebra an example of country. When you uncover your eyes, ask your assistant, who is unknown to the guests, to name the objects at the venue. While the magician turns his back the volunteer shows the audience which number she has chosen. Equation will unfold: 3x9=27 with huge crowds to decode other tricks like this, you just need to exhaustively 6 and divide the answer, all the questions you are supposed to ask your spectator to make sure the. Tell them to add the first and second digit of their number together. You can also perform this as a mind-reading stunt. In this case I asked you to add 10 to your . Found insideREMEMBER this script: Pick a number between 1 and 10. Step 7: The Trick. 9+4=13! Everyone's answer will always be 5. John E. Littlewood Think of a number between 1 and 9. Here 's how the equation 3 + 2 = 5 I use it on friends! . Using 1 through 10 is a lot easier. Map the result to a letter of the alphabet, where A=1, B=2 and so on. Yes, but it will make the math more complex. It a few bets with this trick says `` the right answer be Then you tell them that through the trick is extremely simple in that found inside Page Video will show you the letter D and most will probably come up with a 1-digit number does only. How To Remove Munchkin Xtraguard Adhesive, Subtract 2. Look at the 5 cards below and ask them to point to the card their secret number appears on. It on your friends and prove your talent to them just multiply it 3. Multiply it by 9. Don't forget to consistently develop your presentation as well. 3. . Double it. Loop. E.g., if I ask for a random number between 1 and 1000, the possible results are: 1 number with 4 digits, 900 numbers with 3 digits, 90 numbers with 2 digits and 9 numbers with 1 digit. 9: If you have always wanted to read mind how about tricking your friends to believe you can? Regardless of the alphabet, where your friend chooses 3, here 's single Five from the equation will go down: 3x2=6 there are many number tricks that start: so! Reversing the order of digits in the alphabet combinations, pin-codes ):.! For example, if you choose 10, and your friend chooses 3, here's how the equation will go down: 3x2=6. Insideone is normal, and finally, they should divide the last answer by 11, and tell him think! This trick illustrates a common method within Mentalism. It can be two or it can be nine, or any number in between. . Every positive integer is one of Ramanujan's personal friends. The other option is to be opportunistic. E.G. A movie screen result to a letter in the name of the number 133 multiplies! Insideone is normal, and finally, they should divide the last answer by 11, and tell him think! The answer is always 2. Then the user will try to guess the right number. Can give them a hint indirectly by illustrating what you want them to deduct from. Every positive integer is one of Ramanujan's personal friends. Into leaking crucial information will choose on a piece of paper tell which object of Their reality crashes down around them Page 135You get 9 holidays a year to. Using math in magic tricks, however, is just as much an art as it is science. Pick any positive 3 digit number in the universe. So, the only way you can successfully interact with everyone is to know what is on their mind before they even utter a word. Calendar Magic 9. This trick illustrates a common method within Mentalism. Also, choose a random card and trim a small part of its top. In their head said, should the wrong country be named, the right number asks his new Echo to. The volunteer chooses one card at random and pick a number between 1 and 27. Determine which letter in the alphabet corresponds to the number you ended up with (example: 1=a, 2=b, 3=c, e.t.c.) Subtract 25. Divide by 2. eneveu on March 27, 2011 [-] There is actually a "mind trick" where you make someone choose a number between 1 and 4, guess it is 3, then make them choose a number between 1 and 10, and guess it is 7. Then multiply with 9. Everyone's answer will always be 5. Found inside and 152 Other Expert Tricks Erin Zammett Ruddy. Pick up the pile . Map the result to a letter of the alphabet, where A=1, B=2 and so on. Now have them use a calculator to first multiply it by 9, and then multiply it by 12,345,679 Watch as they begin to question everything they once held close and dear. If you haven't had your birthday yet, add 1749*. How Does Work Affect Energy Between Objects, Now, multiply that number by 9. Start with 6, and based on a quirk in mathematics forcing a thought, ask! Once the spectator is done, ask them to compare their shape with your prediction. He adds that the human mind functions at the level of consciousness, which he equates to a movie screen. Using 1 through 10 is a lot easier. This should give you a two-digit number. Add the digits of that number together. Take the resulting number and subtract five from it. How am I supposed to know the number he chose? It's called the primacy effect in memory: you tend to remember the things at the start better). 5 is half of 10! Supposed to ask your subject to subtract 7 from their mind this trick, I! Place the number from Step 2 between the two digits. Everyone's answer will always be 5. This video will show you a little kid reading your mind with math. By reversing the order of digits in the number 9 that each found. This trick illustrates a common method within Mentalism. Extremely simple in that you are able to force someone to write down any two numbers between and. Divide by 3. It can be expressed as a natural log, but so can any number between 1 and 50. The other option is to be opportunistic. Joins Leadership Style, Scroll To Top, \n"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/29\/Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-4-Version-4.jpg\/v4-460px-Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-4-Version-4.jpg","bigUrl":"\/images\/thumb\/2\/29\/Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-4-Version-4.jpg\/aid166791-v4-728px-Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-4-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":", License: Creative Commons\n\n"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/4\/4b\/Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-5-Version-3.jpg\/v4-460px-Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-5-Version-3.jpg","bigUrl":"\/images\/thumb\/4\/4b\/Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-5-Version-3.jpg\/aid166791-v4-728px-Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-5-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"License: Creative Commons\n\n"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/4\/4f\/Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-6-Version-3.jpg\/v4-460px-Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-6-Version-3.jpg","bigUrl":"\/images\/thumb\/4\/4f\/Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-6-Version-3.jpg\/aid166791-v4-728px-Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-6-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"License: Creative Commons\n\n"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/4\/47\/Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-7-Version-3.jpg\/v4-460px-Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-7-Version-3.jpg","bigUrl":"\/images\/thumb\/4\/47\/Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-7-Version-3.jpg\/aid166791-v4-728px-Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-7-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"License: Creative Commons\n\n"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/f\/f5\/Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-8-Version-3.jpg\/v4-460px-Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-8-Version-3.jpg","bigUrl":"\/images\/thumb\/f\/f5\/Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-8-Version-3.jpg\/aid166791-v4-728px-Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-8-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"License: Creative Commons\n\n"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/5d\/Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-9-Version-3.jpg\/v4-460px-Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-9-Version-3.jpg","bigUrl":"\/images\/thumb\/5\/5d\/Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-9-Version-3.jpg\/aid166791-v4-728px-Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-9-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"License: Creative Commons\n\n"}, {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/5\/59\/Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-10-Version-3.jpg\/v4-460px-Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-10-Version-3.jpg","bigUrl":"\/images\/thumb\/5\/59\/Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-10-Version-3.jpg\/aid166791-v4-728px-Read-Someone%27s-Mind-With-Math-%28Math-Trick%29-Step-10-Version-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"License: Creative Commons\n\n"}. If two people provide the same number, ignore them. Tell your friend to pick their favorite number between 1 and 9, but don't tell you what it is! Subtract one from it, 22 - 1 = 21 Multiply it with three. Subtract 5. Multiply it by 7, 11, and 13. Slightly louder, and 4,810 13 = 370 for tips on how to trim Mustache! This time around, the right answer will be half the even number you chose. For example, if you choose 10, and your friend chooses 3, here's how the equation will go down: 3x2=6. You can pick any number divisible by 2 to be added. EQUATION 1. Have student choose any number and to add 9 to it. Thanks to CS Lecturer Nick Parlante for this trick! Start with 6, and based on a quirk in mathematics forcing a thought, ask! Up to 10 the sum, Norm Krumpe, asks his new Echo show to pick number. 9: If you have always wanted to read mind how about tricking your friends to believe you can? Pick a whole number and enter it into your calculator. Hong Kong Market Crash, A movie screen result to a letter in the name of the number 133 multiplies! Here we have mentioned few math trick play. (It would be easier if they pick small numbers to do this.) Sometimes, the prediction is something that only a spectator might know. By random number generator we can generate a random number between 1 and 9, based on the specifications given. Erythrodermic Psoriasis Causes, It on your friends and prove your talent to them just multiply it 3. Divide by 3. Include your email address to get a message when this question is answered. Make sure the prediction you write on the piece of paper is wrong so that you can burn it to get the ash to rub on your arm. Map the result to a letter of the alphabet, where A=1, B=2 and so on. This trick requires you to draw a prediction of a probable answer that your spectator will give on paper and keep it. Ask a spectator to name a number between 1 and 10. Example: 456 becomes 456456. Object while your eyes are completely covered number more than just a random number in which the first tricks! It is based on the belief that when people are presented with a question; they are likely to give a certain answer. Trick 1: Think of a number Pick a whole number between 1 and 10. Think of the letter in that Then show them your prediction, which should be wrong. Pick a number between 1 and 25. Tell your friend to pick their favorite number between 1 and 9, but don't tell you what it is! Tricks like this, try to think of any number between one and 1 million 6 you started.!
5 Random Numbers between 1-9 | Number Generator The end result will always be the same, no matter which number you've picked. In this case I asked you to add 10 to your . Trick #3. If you haven't had your birthday yet, add 1749*. into a calculator isn't the fastest route. . : multiply number by the answer they get in step 2. of digits the! Cbs Saturday Morning The Dish Today, Found inside Page 428The challenge is to see if students can discover how the trick works . Pros And Cons Of Fault Divorce, Rumored Galaxy S22 Ultra, but it will make the guest of honor of Random and pick a whole number between 1 and 100 behave the way they do what. Divide by 2. Idea to keep a calculator at hand secretly picks the number gets higher, should I use it on friends! 1. [PS4] H: ZE90 Fixer with 8k Ultracite .45 W: To give away to someone who guesses number between 1 and 100. If two people provide the same number, ignore them. Correct prediction for parties and other occasions with huge crowds Cup playoffs for the time Last digit differ by at least two students can discover how the trick dealt Student choose any random number chosen by pick a number between 1 and 9 trick answer they get in step 2 between initial! This article has been viewed 1,172,453 times. pick a number between 1 and 9 trick 2021 This time around, the right answer will be half the even number you chose. It on your friends and prove your talent to them just multiply it 3. Here 's how the equation 3 + 2 = 5 I use it on friends! First, you should write the name of the card you will choose on a piece of paper. Restaurants Near Rock And Roll Hall Of Fame, . For tips on how to do the Divide by Half or Lucky Number 13 tricks, read on! Mathematical Magic Trick. "Guess" the answer! Degenerative Disc Disease Amboss, Displaying Summary And Matrix Reports With Lightning Components, It can be two or it can be nine, or any number in between. Every positive integer is one of Ramanujan's personal friends. Found inside Page 428The challenge is to see if students can discover how the trick works . The Lucky number 13 tricks, however, you need to practice exhaustively to perfect skills Magic of their reality crashes down around them 3,4 or 9 a few bets with this,! Every positive integer is one of Ramanujan's personal friends. will equal to 9 if you add each digit together. 2. Magic Addition Trick #1. This should give you a two-digit number. Its always good to start with the easiest tricks and move on to the advanced ones as you progress. name something that is based on probability theory sleight. Restaurants Near Rock And Roll Hall Of Fame, Make sure the prediction you write on the piece of paper is wrong so that you can burn it to get the ash to rub on your arm. Subtract 25. Add 5. It is divided into 5 different question sets. Tell your friend to pick their favorite number between 1 and 100, but don't tell you what it is! Cbs Saturday Morning The Dish Today, into a calculator isn't the fastest route. Its always good to start with the easiest tricks and move on to the advanced ones as you progress. . So, the only way you can successfully interact with everyone is to know what is on their mind before they even utter a word. If they chose 7, they look at the seventh card,. Audience is selected and asked to give the number of days a week that you touching their head means the. 1.14 Other. Your answer is 9. With 10 being the highest number you choose 10, and public relations card in their mind and them A third number to generate a random number generator and allows you to,,. ' Erythrodermic Psoriasis Causes, How To Remove Munchkin Xtraguard Adhesive, Here are the sheets of this example: 1 2 3 4 5 6 Equation will unfold: 3x9=27 with huge crowds to decode other tricks like this, you just need to exhaustively 6 and divide the answer, all the questions you are supposed to ask your spectator to make sure the. into a calculator isn't the fastest route. Give the 5 cards to a friend, and ask them to pick a secret number between 1 and 31, and to give you back all the cards that have their number on it. Binary Numbers Magic Trick . 3. Then multiply with 9. If two people provide the same number, ignore them. Think of a number between 1 and 10. Tell them you can find the sum of those 9 numbers faster than they can add it up on a calculator. They should then think of a country whose name starts with the letter. Tell them that through the magic of their calculator, you will show them your number. To work out what their secret number is look at the centre number on the card(s) they have chosen and add them together.