Mathematics for IGCSE & O level - Probability (Section 2 - No. 2)
If the probability that Rabia wins the 400-metre race is 0.3, what is the probability that she does NOT win?
0.3
0.7
0
1.3
คำอธิบาย
The probability of not winning is the complement of winning: 1 - 0.3 = 0.7