Number system medium

Number System Quiz (Medium)

1. Which of the following numbers is a prime number?

a) 9 b) 17 c) 25 d) 36

2. Which of the following numbers is a perfect square?

a) 10 b) 16 c) 21 d) 27

3. The decimal representation of the binary number 101 is:

a) 10 b) 5 c) 7 d) 13

4. Which of the following numbers is neither prime nor composite?

a) 0 b) 1 c) 2 d) 3

5. The product of two consecutive odd numbers is always:

a) Odd b) Even c) Prime d) Composite

6. Which of the following is a rational number?

a) √2 b) π c) 0.5 d) e

7. Which of the following is a terminating decimal?

a) 1/3 b) 1/4 c) 1/9 d) 1/7

8. The decimal representation of the fraction 3/8 is:

a) 0.375 b) 0.5 c) 0.625 d) 0.25

9. Which of the following is an irrational number?

a) 0.5 b) -3 c) 7/8 d) √5

10. What is the sum of the first 10 prime numbers?

a) 129 b) 115 c) 1290 d) 144