Write five pairs of prime numbers less than 20 whose sum is divisible by 5.
Ncert Solutions Class 6th Chapter 3 Playing with Numbers Exercise 3.2 Question 10
Express each of the following numbers as the sum of three odd primes:
(a) 21 (b) 31 (c) 53 (d) 61
Ncert Solutions Class 6th Chapter 3 Playing with Numbers Exercise 3.2 Question 9
Write seven consecutive composite numbers less than 100 so that there is no prime number between them.
Ncert Solutions Class 6th Chapter 3 Playing with Numbers Exercise 3.2 Question 8
Which of the following numbers are prime?
(a) 23 (b) 51 (c) 37 (d) 26
Ncert Solutions Class 6th Chapter 3 Playing with Numbers Exercise 3.2 Question 7
Give three pairs of prime numbers whose difference is 2.
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