# Exercise 3.2

Complete above steps to enable this content

1.**What is the sum of any two Numbers.**

Complete above steps to enable this content

2.**State whether the following statements are True or False.**

Complete above steps to enable this content

3.**The numbers 13 and 31 are prime numbers Both these numbers have same digits 1 and 3.Find such pairs of prime numbers upto 100.**

Complete above steps to enable this content

4.**Write down separately the prime and composite numbers less than 20**

Complete above steps to enable this content

5.**What is the greatest prime number between 1 and 10?**

Complete above steps to enable this content

6.**Express the following as the sum of two odd primes**

Complete above steps to enable this content

7.**Give three pairs of prime numbers whose difference is 2.**

**Hint:Two prime numbers whose difference is 2 are called twin primes.**

**Example:[3,5]**

1.(

2.(

3.(

8.**Write seven consecutive composite numbers less than 100 so that there is no prime number between them.**

90's series:

9.**Express each of the following numbers as the sum of three odd primes.**

Complete above steps to enable this content

10.**Write five pairs of prime numbers less than 20 whose sum is divisible by 5.**

2 +

3 +

5 +

Complete above steps to enable this content

**Fill in the blanks :**

(a) A number which has only two factors is called a

(b) A number which has more than two factors is called a

(c) 1 is neither

(d) The smallest prime number is

(e) The smallest composite number is

(f) The smallest even number is