alleryIf one event can occur in m ways and then another in n ways, the total is:
Am times n
Bm plus n
Cm minus n
Dm over n
Answer & Solution
Correct answer: A. m times n
1. The two events happen one after the other, in a given order.
2. Every way of doing the first pairs with every way of doing the second.
3. The total number of occurrences of the events in the given order is m times n.
4. So the counts multiply rather than add.
_Source: syllabus Mathematics, Ch 6 'Permutations and Combinations'_
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