Question

Of the following numbers which one is prime 32 42 29 15

Answer 1

*** A prime number is a number which can't be divided except by the number itself or by 1.

In this case 29 is the only prime number since it can't be divided by any number except by 29 itself or by 1.

32 can be divided by 1, 2, 4, 8, 16, 32
42 can be divided by 1, 2, 3, 14, 21, 42
15 can be divided by 1, 3, 5, 15

For that, 29 is the only prime number between the four numbers.

Answer 2

29 is prime cause it can be devided only with itself and 1