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08-08-2017
Mathematics

contestada

Suppose there are 4 roads connecting town a to town b and 5 roads connecting town b to town
c. in how many ways can a person travel from a to c via b?

Respuesta :

14-08-2017

There are 4 roads from city A to city B, which can be combined to the 5 roads from city B to city C.

So from city A to city C, there are 4*5=20 roads.

Answer: 20

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