Eduardo thinks of a number between 1 and 20 that has exactly 5 factors. what number is he thinking

Answer

16

Explanation

Factors are number that you can multiply to get another number. A number between 1 and 20 that has many factors are 12, 16, 18 ...

We can find the factors of this numbers and identify the one with five factors.

12→1,2,3,4,6, and 12

16→1,2,4,8, and 16

18→1,2,3,6,9, and 18

We find the 16 has exactly 5 factors.