Easy Squaring Shortcut 1

Bankers Adda is also known to be called as Easy Shortcuts adda.
Today we came back with a New Easy Shortcuts
Go through the Shortcut and if you have any doubts please contact bankers adda in the comment section.

Easy Squaring Shortcut 1
Squaring a 2-digit number which ends in 5
1.    Last two digits of the square are always 25.
2.    To find the number which comes before 25, just perform the operation n x (n+1), where n is the digit before 5 in the original number.
3.    By putting the number received in step 2, just before 25 and you get your square.

Example: Find the square of 45?
   If you want to square 45, you can find the same in the following 2 steps
1. Last two digits are 25.
2. The digit before 5 is 4, if you perform n x (n+1) operation on this,
    then it will be 4 x (4+1) = 20
3. Hence the square of 45, will be 2025.

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