How many natural numbers between 1 and 10 can be represented as the product of two or more prime factors?

Primes of concern   2 3 5 7

  2 *2 = 4

2 * 2 * 2 = 8

2 * 3 = 6

3 * 3 = 9         looks like four

IF you include 10   there is one more    2 * 5 = 10