Math Trick: Reveal Common Answer with Few Steps

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In summary, there is a trick where the audience is asked to pick a number between 1 and 10, multiply it by 9, add the two digits together if the answer is two digits, subtract 5 from the answer, and then think of a country and an animal starting with the letter corresponding to the final digit. This trick is described in detail in the thread provided and there are similar tricks in the book "Mathematical Recreations and Essays" by Ball & Coxeter.
  • #1
anil
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any body know that trick where you tell the audience to pick a number and thell them to add a number and multiply by a number and then after a couple of sets everybody will have a common answer? If so could you please explain in detail regarding the procedure.
 
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  • #3
1) Pick a number between 1 and 10
2) multiply that number by 9
3) if the number is two digets, add the two digits together
4) subtract 5 from the answer.
5) if 1 = A, 2 = B, 3 = C, 4 = D, 5 = E, etc... think of a country with the letter your number represents.
5) Using the last letter of the country, think of an animal.

This is an example lol... steps 4 onwards aren't needed but amazingly, most people choose Denmark, and Kangaroo.
 
  • #4
There are a bunch of those (3-4) in 'Mathematical Recreations and Essays' by Ball & Coxeter. That book is packed with all kinds of cool stuff.
 

1. How does the "Math Trick" work?

The "Math Trick" works by using a series of steps to reveal a common answer among a group of numbers. It involves using basic mathematical operations such as addition, subtraction, multiplication, and division to manipulate the numbers and narrow down the possibilities until the common answer is revealed.

2. Is this "Math Trick" accurate and reliable?

Yes, the "Math Trick" is accurate and reliable as long as the steps are followed correctly and the numbers are entered accurately. It is based on mathematical principles and does not involve any guesswork or random factors.

3. Can this "Math Trick" be used on any set of numbers?

Yes, the "Math Trick" can be used on any set of numbers as long as they follow the same pattern and have a common answer. It is a versatile technique that can be applied to a wide range of mathematical problems.

4. Is the "Math Trick" suitable for all ages?

Yes, the "Math Trick" can be enjoyed and used by people of all ages. It is a fun and interactive way to practice basic math skills and develop critical thinking abilities.

5. Can I create my own "Math Trick" using this concept?

Yes, you can create your own "Math Trick" using this concept. It involves understanding the underlying principles and being creative in manipulating the numbers to reveal a common answer. You can also modify existing "Math Tricks" to make them more challenging or unique.

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