Mathematics for IGCSE & O level - Probability (Section 2 - No. 49)
If the probability of an event occurring is 0.3, what is the probability of the event NOT occurring?
0.3
0.7
0
1.3
Explanation
The sum of the probabilities of an event and its complement (not occurring) is always 1. Therefore, 1 - 0.3 = 0.7
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