Question

Choose the correct solution in roster form.

S is the set of prime numbers that are less than 15.

A. {2,3,5,7,11,13}
B. {2,3,5,7,9,11,13}
C. {1,3,5,7,9,11,13}
D. {1,2,3,4,5,6,7,8,9,10,11,12,13,14,15}

Answer 1

In any case A is the only correct answer. 1 isn't a prime number.

Answer 2

Thank you :)

Answer 3

No problem