Question

which of the following cannot be the unit digit of a perfect square number?
a) 1
b) 6
c) 8
d) 9​

Answer 1

Answer:

C) 8

Because 1 is the square root of 1, square of 6 is 36 and 6 is in unit here, and 3 square is 9 which can also be in unit. Thus 8 is the correct answer.

Thank you

Answer 2

Answer:

1

Step-by-step explanation:

because we can't write 2^1 this means 2