Think of a number between 1 and 10. Triple it. Add 6. Then triple again. Now take your answer, probably a two-digit number, and add the digits of your answer. If you still have a two-digit number, add those digits again. You should now be thinking of the magical number 9. The reason this works is based on algebra and the fact that the digits of any multiple of 9 must sum to a multiple of 9.
Harman Singh
8/10/2010 04:29:19 pm
Hi Atul uncle, I read this and thought it was a pretty cool trick until you explained the reason it works. As the objective is to obtain a multiple of 9, we simply need to triple the number twice at any point of the process. That means there was no need of the "Add 6" step. Still very interesting however:)
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What is Mathemagic?
India has been known for its advances in mathematics since ancient times. It is a world-known fact that the number "0" as also the numerals 0 to 9 and many algebraic equations were invented in India and then were spread out by the Arabs to the entire world. All this comes from the "vedic mathematics" which was research on Maths done by ancient Indian sages. This section will surprise you with the many tricks of Vedic Maths! Categories
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