1. Which one of the following are prime numbers?

a) 1, 2, and 3 b) 3, 5, and 7

c) 7, 11, and 13 d) Both B and C

2. Which number is exactly divisible by 6?

a) 3478 b) 4562

c) 5430 d) None of these

3. What least number should be subtracted from 785672 so that the number becomes exactly divisible by 5?

a) 1 b) 2

c) 3 d) 4

4. What least number should be added to 54726 so that the resulting number is divisible by 4?

a) 1 b) 2

c) 3 d) None of these

5. Find 3 multiples of 345.

a) 345, 690, 1200

b) 345, 690, 1053

c) 345, 690, 1035

d) None of these

6. Find the smallest number that is divisible by both 25 and 45.

a) 225 b) 250

c) 375 d) None of these

7. How many factors does 24 has?

a) 4 b) 5

c) 6 d) 8

8. Which number is factor of 9?

a) 2 b) 3

c) 4 d) 5

9. Find all the factors of 36.

a) 1, 2, 3, 4, 5, 6, 9, 12, 18, 36

b) 1, 2, 3, 4, 6, 12, 18, 36

c) 1, 2, 3, 4, 6, 9, 12, 18, 36

d) None of these

10. 363 is divisible by ________.

a) 2 b) 5

c) 6 d) 9