Monthly Archive: September 2011

Squares of numbers from 1 to 30

For making your calculation faster you must remember the squares of  numbers from 1 to 30. Here is a collection of squares which could be easily remembered. Sq. 1 = 1          ...

All MBA exams require fast calculation. Even 5-10 seconds saved per question will save you enough time to solve 3-4 more problems ultimately resulting in a better score. So following things can be handy...

Perfect Numbers

A perfect number is a positive integer that is equal to the sum of its proper positive divisors, that is, the sum of its positive divisors excluding the number itself. Or we can say...

Last digit of a product of numbers with power.

Last digit of a product of any number of numbers is equal to last digit of product of last digits of all the numbers. So to find the last digit in this case first...

Last digit of a sum of numbers with power.

Last digit of a sum of any number of numbers is equal to last digit of sum of last digits of all the numbers. So to find the last digit in this case first...

Last digit of any power of a number

To find the last digit of any power of a number we should keep following in mind. 1. Last digit of any power number repeats after a certain interval say N. So N is...

Idioms 1

1. Throw down the gauntlet Meaning : To issue a  challenge . A gauntlet-wearing knight would challenge a fellow knight or enemy to a duel by throwing one of his gauntlets on the ground....