## Class 6 Maths- Exercise 3.2- Question 11 to 12

(11) Write five pairs of prime numbers less than 20 whose sum is divisible by 5. Sol: Prime numbers less than 20 are 2, 3, 5, 7, 11, 13, 17 and 19 2 + 3 = 5 (divisible by 5) 2 + 13 = 15 (divisible by 5) 3 + 7 = 10 (divisible by …