Question

Q.5. Which of the following cannot be the unit digit of a perfect square number?
a) 6 b)1 c) 9 d) 8

Answer 1

Answer:

B.1

Step-by-step explanation:

Answer 2

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.