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nirvana33 [79]
3 years ago
7

Which number is a composite number? 11 21 31 41

Mathematics
2 answers:
erastovalidia [21]3 years ago
4 0

Answer:

21

Step-by-step explanation:

It is 21 since 21 = 3 * 7.

The other 3 numbers are prime.

svp [43]3 years ago
4 0

Hey!

-------------------------------------------------

A composite number is a number that has more than one factor other than 1 and itself.

-------------------------------------------------

Factors of 11: 1 and 11

Factors of 21: 1, 3 and 7, 21

Factors of 31: 1 and 31

Factors of 41: 1 and 41

-------------------------------------------------

So buy seeing all the factors of each number the only one that is composites is 21.

-------------------------------------------------

Answer:

21

-------------------------------------------------

Hope This Helped! Good Luck!

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