Ask you friend to choose a number between 1 and 10. Tell your audience to multiply their number by 2. Ask the audience to multiply the new number by 5. Have the audience divide their current number by their original number. Instruct the audience to subtract 7 from their current number. Now it’s your turn. If they did everything correctly, the answer will always be 3. Amazing! For example: if your friend chooses 3, they’ll do 3x2=6, 6x5=30, 30/3=10, and 10-7=3.
After choosing your number (but not sharing it), ask your friend to choose a number between 1 and 10. Tell your friend to multiply their chosen number by 2. Choose an even number to use yourself and share it with your audience. Ask your friend to add your number to the one in their head. Tell your audience to divide the new number by 2. Tell them to subtract their original number from the equation. Next, blow their mind. The answer is half of the even number your chose initially. For example: if you choose 10, and your friend chooses 3, the equations will be 3x2=6, 6+10=16, 16/2=8, 8-3=5, and finally, 5 is half of 10.
Ask your audience to choose a number between 1 and 10. Tell your friend to multiply their number by 9. Ask them to add the first and second digit of their new number together. If it’s a single digit number (i. e. 9), add 0. Get your friend to add 4 to their new number. Now, shock them with the final result! Their number should be 13. For example: If your friend chooses 3, the equations will be 3x9=27, 2+7=9, and 9+4=13.
Multiply 6 by an even number. The answer will end in the number you multiplied by (6x4=24, 6x8=48). Repeat any number 3 times in your head (i. e. , 777, 111, 444). Add up the digits, and divide your original number by the result of your addition. Your answer is 37! Start with a number between 1-6. Multiply by 9, then 111, then 1001, and then divide by 7. The result will astound friends: it’ll always contain a 1, 2, 4, 5, 7, and 8.
How many 9s are in 100? Your friend might feel tempted to say “10,” but in fact, the answer is 20. How many letters are in the alphabet? “The alphabet” has 11 letters. Your two coins equal 30 cents, and one of them isn’t a quarter. Which coins do you have? A nickel and a quarter (the nickel" is the coin that’s not a quarter). There are eight oranges in a bag and you take away two, how many do you have? 2 of course! Specifically, the 2 that you took away. Some months have 8 letters in their name, some have 5. How many have 3? All of them have (at least) 3, duh!
“How” = 3, “I” = 1, “wish” = 4, “I” = 1, “could” = 5, “calculate” = 9, “Pi” = 2. What do you end up with? 3. 141592.
