Posts filed under 'Tests'
Learning Simple Magic Tricks
I am sharing to you this magic trick which I have recently learned and I am pretty sure it will be fun to try out on your family and friends. You don’t have to be math genius or a professional magician in order to learn these simple tricks.
NUMBER TRICK
Effect:
Tell a friend that the two of you will pick five 5-digit numbers at random, and then will add them together. Amazingly, after just hearing the first number and before the others have even been selected, you’ll be able to accurately predict what the TOTAL of those five numbers will be!
The things you need :
Pen and paper
Presentation:
- Have a friend write down a 5-digit number. For example, he might write down 67,812.
- Then on a separate piece of paper, you can immediately write down the final “answer” to this (the total of all five numbers) even though four of the numbers haven’t even been selected yet! For the example given, 67,812, the answer will be 267,810.
- Announce that you have “predicted” the final answer and written it down as proof. But don’t show it just yet. Fold the piece of paper over to keep that answer hidden till the end of the trick.
- Then have your friend write down a second 5-digit number right beneath the first one.
- You, then, quickly write down a third 5-digit number right below it.
- Then have your friend write a fourth 5-digit number under your number. Then you immediately write a fifth 5-digit number beneath it.
- Then ask your friend to add up the five 5-digit number that both of you have written down.
- Compare that answer to the one you wrote down after the first number was selected.
How is it done?
- Take the 1st number, subtract 2 from it, then put the number “2” in front of it. For example, if the number was 67,812, the final answer will be 267,810.
- Then, when you see the second number your friend writes down, you mentally subtract each digit number from 9, and write the answer for the third number.
- Example:
- If your friend’s second number is 11,111, then the number you would choose and write down would be 88,888.
- If the given number is 56,123, then your next number is 43,876.
- The key here is that each of your friend’s number digits when added to the corresponding digit of your total must total 9.
- Then ask your friend to write down a fourth number, and, again, you subtract each digit of the number from 9 (do this silently) and write down the answer as your fifth number.
- Example:
- If the fourth number is 12,345, then you would write down as 87,654 as the fifth number because (12,345 + 87,654 = 99,999)
- When the five 5-digit numbers that you two have selected are all added together, the total will be identical to the number you originally wrote down and set aside.
So, what are you waiting for, go and start practicing this math trick. Have fun! Just keep on visiting this site for I will be posting more “tricks” and other easy to learn “magic tricks” in my future blogs.
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