Question
From city A' to city B', there are `4` roads, and from city B' to city C', there are `3` roads. In how many different ways can one get from A' to C', if we are only allowed to travel on the roads, and in addition, we do not want to travel backwards?
Difficulty level (1 very easy - 10 very hard): 1
Topics:
Combinatorics
->
Product Rule / Rule of Product
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