Question

which of the folowing numbers are prime : 2, 11, 1, 6, 21, 9

Answer 1

A COMPOSITE NUMBER HAS MORE THAN 2 FACTORS.

Answer 2

6=2*3
21=7*3
9=3*3

Answer 3

6,21,9 ARE COMPOSITE NUMBERS.

Answer 4

2=2*1

11=11*1
2 AND 11 ARE PRIME.

Answer 5

1 IS NEITHER PRIME NOR COMPOSITE.

Answer 6

2 and 11 are the only prime numbers because 1 is not a prime number and all of the other numbers can be divided by something other than one and themselves.

Answer 7

Alright thank you guys for the help.

Answer 8

:)