Squares and Square Roots( MCQ)

1. Which of the following is a perfect square?

• A. 1057

• B. 625

• C. 7928

• D. 64000

2. Which of the following will have 6 at unit place?

• A. 19²

• B. 11²

• C. 24²

• D. 13²

3. If 5278 is squared, then what will be at unit place?

• A. 8

• B. 7

• C. 6

• D. 4

4. What will be the number of zeros in square of 400?

• A. 2

• B. 3

• C. 4

• D. 6

5. How many natural numbers lie between 9² and 10²?

• A. 17

• B. 18

• C. 19

• D. 20

6. What is the sum of the first four odd natural numbers?

• A. 16

• B. 17

• C. 18

• D. 20

7. The sum of 1 + 3 + 5 + 7 + 9 + 11 + 13 + 15 + 17 +19 is:

• A. 121

• B. 120

• C. 100

• D. 110

8. The Pythagorean triples whose smallest number is 8:

• A. 8, 16 17

• B. 8, 17, 18

• C. 8, 15, 17

• D. 8, 15, 16

9. Which of the following is a perfect square? 32, 66, 81, 101

• A. 32

• B. 66

• C. 81

• D. 101

10. Find the greatest four-digit number that is a perfect square.

• A. 9990

• B. 9801

• C. 9999

• D. None of these