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AURORKA [14]
3 years ago
7

there are 9 different routese between citise A and B, and 8 different routes between cities B and C. How many different routese

are there form city A to city C by way of city B socratic.org
Mathematics
1 answer:
Nookie1986 [14]3 years ago
6 0

Answer:

72 routes

Step-by-step explanation:

The total number of routes from city A to C by way of city B is determined as the product of picking one out 9 routes from A to B by picking one out of 8 routes from city B to C:

n= \frac{9!}{(9-1)!} *\frac{8!}{(8-1)!} =9*8\\n=72\ routes

There are 72 different possible routes.

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