1. Form the largest number using the digits 3, 5, 7, and 9 without repetition.

2. Which of the following is a palindromic number?

3. Which of the following is a 4-digit Kaprekar number?

4. Form the smallest number using the digits 4, 6, 8, and 2 with repetition allowed.

5. The two consecutive prime numbers with difference 2 are called

6. The two numbers which have only 1 as their common factor are called

7. The numbers which are not multiple of 2 are called

8. The numbers which have more than two factors are called

9. The numbers which have only two factors (1 and the number itself) are called as

10. LCM of two co-prime numbers is their