Question

Which number is a factor of 30 and also a prime number?

A.
4

B.
5

C.
6

D.
11

Answer 1

Hi. We start by listing out factors of 30. Did you already get to that?

Answer 2

hey can i help

Answer 3

i think it might be B.

Answer 4

it is B.

Answer 5

i thought so

Answer 6

Divide 30 by each number.
If it divides evenly with no remainder, then the number is a factor of 30.
Then if you find a factor, check if the factor is also a prime number.

Answer 7

Its B

Answer 8

It might be B. or C.

Answer 9

yep b or c

Answer 10

\(30 \div 4 = 7.5\) 4 is not a factor.

\(30 \div 5 = 6\) 5 is a factor.

\(30 \div 6 = 5\) 6 is a factor.

\(30 \div 11 = 2.7272... \) 11 is not a factor.


Only two choices are factors of 30, 5 and 6.
Is 5 or 6 a prime number?

Answer 11

Only B. Can't be C. 6 is not a prime number

Answer 12

Correct.

Answer 13

Oops, shouldn't have answered for EliasAG. Oh well.