Monthly Archive: June 2011

A small Divisibility Trick for any number

A small Divisibility Trick for any number

Sometimes it becomes very cumbersome to check the divisibility by the conventional methods specially in case of 7, 11, 13…. etc. Since the divisibility methods corresponding to these numbers takes good amount of time,...

sqrt-x

Is √x² = x or -x or none.

Crawl through various forums of mathematics & MBA preparation  and you will find people searching for a clue whether √x² = x or -x or what …. Now to solve this situation, always remember in...

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