MEDIUM
6th CBSE
IMPORTANT
Earn 100

Write all prime numbers between 70 and 90.

Important Questions on Playing With Numbers

MEDIUM
6th CBSE
IMPORTANT
Mathematics for Class 6>Chapter 2 - Playing With Numbers>EXERCISE>Q 2

Write all prime numbers between 40 and 85.

EASY
6th CBSE
IMPORTANT
Mathematics for Class 6>Chapter 2 - Playing With Numbers>EXERCISE>Q 2

Write all prime numbers between 60 and 100.

MEDIUM
6th CBSE
IMPORTANT
Mathematics for Class 6>Chapter 2 - Playing With Numbers>EXERCISE>Q 3
What is the smallest prime number? Is it an even number?
EASY
6th CBSE
IMPORTANT
Mathematics for Class 6>Chapter 2 - Playing With Numbers>EXERCISE>Q 4
What is the smallest odd prime? Is every odd number a prime number? If not, give an example of an odd number which is not prime.
MEDIUM
6th CBSE
IMPORTANT
Mathematics for Class 6>Chapter 2 - Playing With Numbers>EXERCISE>Q 5
What are composite numbers? Can a composite number be odd? If yes, write the smallest odd composite number.
MEDIUM
6th CBSE
IMPORTANT
Mathematics for Class 6>Chapter 2 - Playing With Numbers>EXERCISE>Q 6
What are the twin-primes? Write all pairs of twin-primes between 50 and 100 .
MEDIUM
6th CBSE
IMPORTANT
Mathematics for Class 6>Chapter 2 - Playing With Numbers>EXERCISE>Q 7
What are co-primes? Give examples of five pairs of co-primes. Are co-primes always prime? If no, illustrate your answer by an example.
MEDIUM
6th CBSE
IMPORTANT
Mathematics for Class 6>Chapter 2 - Playing With Numbers>EXERCISE>Q 8

Check whether two prime numbers are always co-primes?