Q. 55.0( 3 Votes )

Which of the following numbers is not a perfect square?
A. 3600

B. 6400

C. 81000

D. 2500

Hint. The number 81000 ends in an odd number of zeros.

Answer :

We know that,

As per the properties of square,


All the numbers that end with odd numbers of zeroes are not a perfect square


Hence,


Considering the property, we get


The number 81000 is not a perfect square


As the number of zeroes of this number is 3.


Therefore,


Option (C) is the correct option.

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