P(A ∩ B) = 1/3, P(A ∪ B) = 5/6, P(A) = 1/4 হলে, P(B) = কত?

P(A ∪ B) = P(A) + P(B) - P(A ∩ B)
বা, P(A ∩ B) = P(A) + P(B) - P(A ∪ B)
1/3 = (1/4) + P(B) - (5/6)
P(B) = (1/3) - (1/4) + (5/6)
P(b) = (4 - 3 + 10)/12 = 11/12