Question

if the unit digit of a perfect square number is 9 than what will be the unit digit of its. (a) 9 (b) 3 or 7 (c) 1( d) 1 or 9​

Answer 1

Answer:

d

Step-by-step explanation:

1 or 9

mark me as brainly

Answer 2

Answer:

3 and 7 is the correct answer

Step-by-step explanation:

Only those numbers, when squared will have 9 at their unit place are 4 and 3 and 7.

Because 3×3 = 9

and 7×7 = 9