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suppose there are 8 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?
 one year ago
 one year ago
suppose there are 8 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?
 one year ago
 one year ago

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littlepixie99Best ResponseYou've already chosen the best response.0
as there are eight roads there are eight options to get to town b. there are five options to get to town c. therefore you must do 8 (original options a  b) * 5 (options bc)
 one year ago

amygBest ResponseYou've already chosen the best response.0
I do no understand the formula
 one year ago

littlepixie99Best ResponseYou've already chosen the best response.0
ok sorry,a  b means the road from town a to b b  c means the road from town b to c
 one year ago

littlepixie99Best ResponseYou've already chosen the best response.0
another way to think about it it there are 8 ways to get to the first road of b to c there are eight ways to get to the second road of b to c and so on until the fifth road of b to c so you have 5 lots of 8 options thus 5*8
 one year ago

amygBest ResponseYou've already chosen the best response.0
ok i think i understand. thank you
 one year ago
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