Class 6 Maths Chapter 3 Exercise 3.2 NCERT Solution – Playing With Numbers

NCERT Class 6 Math Exercise 3.2 Solution of Chapter 3 Playing with Numbers with explanation. Here we provide Class 6 Maths all Chapters in Hindi for cbse, HBSE, Mp Board, UP Board and some other boards.

Also Read : – Class 6 Maths NCERT Solution

NCERT Class 6 Maths Chapter 3 Playing with Numbers Exercise 3.2 Solution in english Medium.

Class 6 Maths Chapter 3 Exercise 3.2 Solution

Q 1. What is the sum of any two
A. Odd numbers?
B. Even numbers?

Ans.
A. Sum of any two odd numbers is always be Even.
B. Sum of any two even numbers is always be Even.

Q.2. State whether the following statements are True or False?
A. The sum of three odd numbers is even.
Ans. False.

B. The sum of two odd numbers and one even number is even.
Ans. True.

C. The product of three odd numbers is odd.
Ans. True.

D. If an even number is divided by 2, the quotient is always odd.
Ans. False.

E. All prime numbers are odd.
Ans. False.

F. Prime numbers do not have any factors.
Ans. False.

G. Sum of two prime numbers is always even.
Ans. False.

H. 2 is the only even prime number.
Ans. True.

I. All even numbers are composite numbers.
Ans. False.

J. The product of two even numbers is always even.
Ans. True.

Q.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.

Ans. Such pairs of prime numbers upto 100 are as:
17 and 71
37 and 73
79 and 97

Q.4 Write down separately the prime and composite numbers less than 20.
Ans. Prime numbers less than 20 are as:
2, 3, 5, 7, 11, 13, 17, 19etc.

Composite numbers less than 20 are as:
4, 6, 8, 9, 10, 12, 14, 15, 16, 18 etc.

Q.5. What is the greatest prime number between 1 and 10?
Ans. 7 is the greatest prime number between 1 and 10.

Q. 6. Express the following as the sum of two odd primes.
A. 44
Ans. 44 = 3 + 41

B. 36.
Ans. 36 = 5 + 31

C. 24
Ans. 24 = 5 + 19

D. 18
Ans. 18 = 5 + 13

Q.7 Give three pairs of prime numbers whose differences is 2.
Ans. three pairs of prime numbers whose differences is 2 are as:
3, 5
5, 7
11, 13

Q.8. Which of the following numbers are prime?
A. 23
Ans. It is a prime number.

B. 51
Ans. It is not a prime number.

C. 37
Ans. It is a prime number.

D. 26
Ans. It is not a prime number.

Q.9. Write seven consecutive composite number less than 100 so that there is no prime number between them.
Ans. seven consecutive composite number less than 100 so that there is no prime number between them are as:
90, 91, 92, 93, 94, 95, 96.

Q. 10. Express each of the following numbers as the sum of three odd primes.
A. 21
Ans. 21 = 3 + 5 + 13

B. 31
Ans. 31 = 3 + 5 + 23

C. 53
Ans. 53 = 13 + 17 + 23

D. 61
Ans. 61 = 7 + 13 + 41

Q. 11. Write five pairs of prime numbers less than 20 whose sum is divisible by 5.
Ans. FIve pairs of prime numbers less than 20 whose sum is divisible by 5 are as:
2, 3
2, 13
17, 3
7, 13
11, 19

Q. 12. Fill in the blanks:
A. A number which has only two factors is called a _________________.
Ans. Prime number.

B. A number which has more than two factors is called a ___________.
Ans. Composite number.

C. 1 is neither _________ nor _______.
Ans. Prime number, Composite number.

D. The smallest prime number is _________.
Ans. 2.

E. The smallest composite number is _________.
Ans. 4.

F. The smallest even number is _________.
Ans. 2.

Want to Support our Work

Leave a Comment

error: Content is protected !!