Mathematics for IGCSE & O level - Probability (Section 3 - No. 26)
Which of the following is a key point for the probability of an event?
number of outcomes that do not give the event/total number of outcomes
number of outcomes that give the event/total number of outcomes
number of outcomes that give the event/number of outcomes that do not give the event
total number of outcomes/number of outcomes that give the event
解释
The basic formula of probability is number of favourable outcomes divided by total number of outcomes.