Mark (√) against the correct answer in each of the following: If A and B are mutually exclusive events such that P(A) = 0.4, P(B) = x and P(A ∪ B) = 0.5, then x = ?

Question

Philoid · Accepted Answer

If A and B are mutually exclusive events then,

P(A) = 0.4, P(B) = X

And P(A B) = P(A)+P(B) = 0.5 = 0.4 + P(B)

⇒ P(B) = 0.1

Mark (√) against the correct answer in each of the following:If A and B are mutually exclusive events such that P(A) = 0.4, P(B) =x and P(A ∪ B) = 0.5, then x = ?

Mark (√) against the correct answer in each of the following:
If A and B are mutually exclusive events such that P(A) = 0.4, P(B) =x and P(A ∪ B) = 0.5, then x = ?