Squaring a number is made easy now ~ Banks Exams preparation

Shortcut method of squaring any number ending in 5:

i.e.

(45)^2= square of 45

= (4*5)!5*5

=2025

=2025=(45)^2

Here the first number 4 should be multiplied with (4+1) by adding 1 and also squaring only 5 means we get 25.

For example:

(Xy5)^2= (xy*(xy+1)) ! (5)^2

(115)^2= 11!5=(11*12)!25= 13225

Here the first number 11 is multiplied with adding 1 in it (11*12) and side by squaring 5 and then putting them together.

Note:Remaining will be updated soon.

{ Banks Exams preparation }