Sunday, January 18, 2015

(Math Tricks) How to find a square of a number ending with 5

In this short post i will show you how to find square of a number that ends with digit 5.
This trick will be very useful while calculating the answers in Quantitative Aptitude section of your exams.

Lets say we want to find square of 75.

Step 1: Multiply your ten's digit with the next higher digit.
             So  we get 7*8=56

Step 2: Take the answer in the first step and put 25 after the answer of step 1 to get the final answer.

             So final answer will be 5625.

Do some more examples below and try it on your own.

852 =



Write your suggestions in the comments.

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