Damian Kerr

2022-02-03

What is the composite number between 20 and 40?

iloverayyeb

Beginner2022-02-04Added 14 answers

A composite number is any number which has factors apart from 1 and itself.

So most numbers between 20 and 40 are composite:

$20=2\times 2\times 5$

$21=3\times 7$

$22=2\times 11$

$24=2\times 2\times 2\times 3$

$25=5\times 5$

$26=2\times 13$

$27=3\times 3\times 3$

$28=2\times 2\times 7$

$30=2\times 3\times 5$

$32=2\times 2\times 2\times 2\times 2$

$33=3\times 11$

$34=2\times 17$

$35=5\times 7$

$36=2\times 2\times 3\times 3$

$38=2\times 19$

$39=3\times 13$

$40=2\times 2\times 2\times 5$

The only ' numbers (having no factors apart from 1 and themselves) between 20 and 40 are: 23, 29, 31, 37.

So most numbers between 20 and 40 are composite:

The only ' numbers (having no factors apart from 1 and themselves) between 20 and 40 are: 23, 29, 31, 37.