Mathematics for IGCSE & O level - Probability (Section 2 - No. 33)
If the events are independent, P(A) = 0.6 and P(B) = 0.4, what is P(A or B)?
1.0
0.24
0.76
0.1
Explanation
P(A or B) = P(A) + P(B) - P(A and B). P(A and B) = 0.6*0.4=0.24. Therefore, P(A or B) = 0.6 + 0.4 - 0.24 = 0.76
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