If P (A) and P (not A) are complementary events and P (A) = 0.15, then P (not A) =?
Answer: C
Given, P (A) = 0.15
As, P (A) and P (not A) are complementary events, P (A) + P (not A) = 1
P (not A) = 1 – P (A) = 1 – 0.15 = 0.85