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Free Study Material For RRB Examination: Mathematics (Square Root & Cube Root)

Free Study Material For RRB Examination

Subject : Mathematics (Square Root & Cube Root)

Square Root

The square root of a number is that number the product of which itself gives the given number, ie, the square root of 400 is 20, the square root of 625 is 25.


Thus from the above example it is clear that in order to find the complete square root of a given number every prime factor of that number should be repeated twice. Thus, we can make a number which is not a perfect square, a perfect square by multiplying or dividing the number by those factors of it which are not contained in pairs.

Cube Root

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