Mathematics for IGCSE & O level - Probability (Section 9 - No. 2)
If the probability of an event is 1/4, what is the probability of the event *not* occurring?
1/4
1/2
3/4
1
स्पष्टीकरण
The probability of not occurring is 1 - the probability of occurring (1-1/4=3/4).