Multiple Routes Towns A, B, C, and D are located in such a way that there are four roads from A to B, five roads from B to C, and six roads from C to D. How many routes are there from town A to town D via towns B and C?
The number of routes from town A to town D via towns B and C.
There are four towns A, B, C, and D.
Town A and B are connected by four roads, town B and C are connected by five roads, and town C and D are connected by six roads.
If two events and occur in order and occur in ways and occur in ways, then the two events can occur in order in ways
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