To find the squares of numbers near numbers of which squares are known
For eg you might know squares of 20,30,40,.. Very easily.
To find square of 41 which is near to 40, Add 40+41 to 1600 =1681
To find 592 , which is near to 60, Subtract 602 - (60+59) =3600-119 = 3481
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Preparation Strategy for IBPS Clerical 2015Opens in New Window