Eduardo thinks of a number between 1 and 20 that has exactly 5 factors What number could he be thinking of
depends if you count 1 and the number itself, if you exclude those, none have 5 factors
If you include the number itself
factors of 4: 2,4
factors of 12: 2,3,4,6,12 <---- best case
factors of 16: 2,4,8,16