If P(A) = 0.3, P(B) = 0.4, and P(A and B) = 0.2, find P(A or B).

Question

Additon & Complement Rule College Geometry Help.

Answer 1

P(A or B) = P(A) + P(B) - P(A and B) = 0.3 + 0.4 - 0.2 = 0.5