Question

If A and B are two complementary events then the relation between P(A) and P(B) is ______.

विकल्प

• P(A) = P(B)

• P(A) + P(B) = 0

• P(A) + P(B) = 1

• none of these

Answer 1

If A and B are two complementary events then the relation between P(A) and P(B) is P(A) + P(B) = 1.

Explanation:

We know that,

The probabilities of two complimentary events add up to 1.

∴ P(A) + P(B) = 1