Factors and Multiples

Question 1: How many prime numbers are there between 10 and 40? Solution: Prime numbers between 10 and 40 = 11, 13, 17, 19, 23, 29, 31, 37 There are 8 prime numbers between 10 and 40. Question 2: Diagram below shows a sequence of prime numbers. 13, 17, x, y, 29 Find the value of x + y. Solution: … Read more