Question

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

Answer 1

The number is $\boxed{16}$ that has exactly five factors in between 1 to 20.

Further explanation:

Factors are the numbers that are multiplied together to obtain another number.

Explanation:

The numbers between 1 and 11 doesn’t have more than 3 factors.

The factors of 12 are 1, 2, 3, 4, 6 and 12.

12 have 6 factors.

The factors of 13 are 1 and 13.

13 have 2 factors.

The factors of 14 are 1, 2, 7 and 14.

14 have 4 factors.

The factors of 15 are 1, 3, 5 and 15.

15 have 4 factors.

The factors of 16 are 1, 2, 4, 8 and 16.

16 have 5 factors.

The factors of 17 are 1, and 17.

17 have 2 factors.

The factors of 18 are 1, 2, 3, 6, 9 and 18.

18 have 6 factors.

The factors of 19 are 1 and 19.

19 have 2 factors.

The factors of 20 are 1, 2, 4, 5, 10 and 20.

20 have 6 factors.

The number is $\boxed{16}$ that has exactly five factors in between 1 to 20.

Learn more:

1. Learn more about inverse of the functionhttps://brainly.com/question/1632445.

2. Learn more about equation of circle brainly.com/question/1506955.

3. Learn more about range and domain of the function brainly.com/question/3412497

Answer details:

Grade: Middle School

Subject: Mathematics

Chapter: Comparing quantities

Keywords: Eduardo, number, factors, exactly, one, twenty, thinking, factorization, prime number, prime factorization.

Answer 2

Eduardo is thinking of the number ' 16 '.

The factors of  16 are  1,  2,  4,  8, and  16.

Here's a cool little factoid:

Almost every number has an even number of factors. The
only ones that have an odd number are perfect squares.
(They still have an even number of factors, but two of the factors
are the same number, so the list looks like an odd number long.)