MEDIUM
6th CBSE
IMPORTANT
Earn 100

What are the twin-primes? Write all pairs of twin-primes between 50 and 100 .

Important Questions on Playing With Numbers

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?

 

MEDIUM
6th CBSE
IMPORTANT
Mathematics for Class 6>Chapter 2 - Playing With Numbers>EXERCISE>Q 8

Check whether one prime and one composite number are always co-primes?

 

MEDIUM
6th CBSE
IMPORTANT
Mathematics for Class 6>Chapter 2 - Playing With Numbers>EXERCISE>Q 8

Check whether two composite numbers are always co-primes?

MEDIUM
6th CBSE
IMPORTANT
Mathematics for Class 6>Chapter 2 - Playing With Numbers>EXERCISE>Q 9

Express the given number as a sum of two or more primes?

13

MEDIUM
6th CBSE
IMPORTANT
Mathematics for Class 6>Chapter 2 - Playing With Numbers>EXERCISE>Q 9

Express the given number as a sum of two or more primes?

130

MEDIUM
6th CBSE
IMPORTANT
Mathematics for Class 6>Chapter 2 - Playing With Numbers>EXERCISE>Q 9

Express the given number as a sum of two or more primes?

180

MEDIUM
6th CBSE
IMPORTANT
Mathematics for Class 6>Chapter 2 - Playing With Numbers>EXERCISE>Q 10

Express the given number as the sum of two odd primes:

36