Question

Suppose we call a number funny if it is the product of three prime factors, of which exactly two are the same. (For example: 12=2*2*3, so 12 is funny.) What is the total number of funny numbers between 30 and 60?

Answer 1

Step-by-step explanation:

31 37 41 43 47 51 53 57 59

are the prime numbers between 30 and 60