Q. 6

Which of the following cannot be the unit digit of a perfect square number?
A. 6

B. 1

C. 9

D. 8

Answer :

We know that,

As per the properties of square,


A number which is a perfect square cannot have 2, 3, 7 or 8 as their unit digit.


Hence,


Considering the property, we get


That 8 cannot be the unit digit of a perfect square number


Therefore,


Option (D) is the correct option.

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