Question

Which number is prime?

A.
47

B.
51

C.
57

D.
63

Answer 1

can someone tell how i get the answer i bad at these type of questions

Answer 2

A

Answer 3

i think it's A too but i wannna know how you get the answer

Answer 4

A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.

Answer 5

If a number doesn't come in any table except 1 and itself is a prime number.

Answer 6

Most unfortunately, there aren't really any clear-cut ways of determining the prime-ness of numbers... you have to use your gut. If a number has any sort of divisor (that is, any number that neatly divides it into whole number parts) then it is NOT prime.

Answer 7

OH THANKS