Playing With Numbers

1. Two numbers having only 1 as common factor are called

Prime numbers

Co- prime numbers

Composite numbers

Odd Numbers

2. Which of the following pair is co-prime

6 and 8

18 and 35

7 and 35

30 and 415

3. Which of the following is smallest prime number:

1

2

3

4

4. Tell the maximum consecutive numbers less then 100 so that there is no prime number between them

5

6

7

8

5. Which of the following number is divisible by 3

121

123

124

122

6. The only prime number which is also even

1

2

4

6

7. The sum of two odd and one even numbers is

Even

Odd

Prime

Composite

8. The smallest composite number is

1

2

3

4

9. If a number is divisible by 2 and 3 both then is divisible by

5

6

7

8

10. A number is divisible by 4 if its

Last digit is 4

Last digit is 0

Last two digits are divisible by 4

Last digit is 8