{3,5,7,11,17,19}
{3,5,11,13,17,19}
{3,5,7,11,13,17,19}
{2,3,5,7,11,13,17,19}
Correct answer is C
P = {1, 3, 5, 7, 9, 11, 13, 15, 17, 19}
Q = {-1, 3, 5, 7, 11, 13, 17, 19, 23}
P ∩ Q = {3, 5, 7, 11, 13, 17, 19}
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