Simple Mathematics tricks

Mathematics is a very useful subject, which everybody needs it too. In some of an exams, there calculator is not allowed and you want solve the mathematics in few seconds here is few tips.

* Multiplication:

Let X is a number ends with 5 and number between 10 to 100 .When X multiplies with X, the answer of the last two digits should be 25 i.e. 5x5(last integers of the corresponding number). Multiply other two integers , but before multiply you have to add +1 to the any one of them and this will give the front's one or two integers.

Example:   15 x 15

Last two integer will be 25

Add +1 to any one of them : (1+1)x1 = 2

So the answer will be 225

You can try for other numbers between 10 to 100, it will works.

*Square Root

Let X is integer which starts from 1 and go as ascending order,then descends and go to 1 again

Example :121,123454321,

For this number the calculation of square root will be very easy, just put 111... until where the ascending order stops. i.e. for 121, the ascending order stops in 2 so 11 will be the square root of 121 and for 123454321 square root will be 11111.

There is few more tricks which will be update shortly.