Question

Answer For Fan

Which of the following is true?

fifteen is a prime number because it has a factor of 5.

eleven is a composite number because one and eleven are its only factors.

4 is a prime number because it is only divisible by one and itself.

9 is a composite number because it is divisible by 3

Answer 1

look like the last one

Answer 2

the last one

Answer 3

1 can't be right because 15 isn't a prime number

Answer 4

11 is a prime number

Answer 5

4 is a composite number

Answer 6

Its the very last one

Answer 7

Look at the choices.
A ` a prime number because it has a factor` does it make sense to say this ?
C is not true, because 4= 2 × 2
D ` 9 is a composite number because it is divisible by 3` huh ???

Answer 8

b?

Answer 9

No, D is true, 9 is a composite, I confused 'prime' and composite.

Answer 10

TRUST ME ITS THE LAST ONE

Answer 11

I'll link it

Answer 12

11 has 1 pair of factors 11 and 1, but it doesn't make it composite.

Answer 13

ty

Answer 14

it is D

Answer 15

http://en.wikipedia.org/wiki/Composite_number

Answer 16

It's WIKI but who cares