Question

Which one is the prime number?
a) 4
b) 6
c) 7
d)9​

Answer 1

7 is the prime number because the only ways to writing it as product, 7×1 and 1×7

Answer 2

Answer:

7

EXPLANATION:

Prime numbers only have two factors. Its only divisible by 1 and itself.

7/1=7

7/7=1

but

4,6,9 have more than two factors

4 have 3 factors

4/1, 4/2, 4/4

1,2,4

6 have 4 factors

1,2,3,6

6/1,6/2,6/3,6/4

9 have 3 factors

1,3,9.

9/1, 9/3, 9/9