Question

If a number has 9 in the unit’s place, then the unit’s digit of its square root is which of the following numbers

1 point

1 or 3

3 or 9

7 or 9

3 or 7​

Answer 1

Answer:

Answer is 3

Step-by-step explanation:

hope it will be helpful for you

Answer 2

Answer:

Correct option is D 3 or 7

Step-by-step explanation:

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

Because 3×3 = 9

and 7×7 = 9

Hence, Option D is correct answer.