SOLUTION: Could you please help me with the following question?
A doctor visits 5 people by bus once a day. He can use either of two buses, but once he starts out he visits all 5 people
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Question 253885: Could you please help me with the following question?
A doctor visits 5 people by bus once a day. He can use either of two buses, but once he starts out he visits all 5 people in the .
same order before returning home. How many possibilities are there?
Thank you
Found 2 solutions by jim_thompson5910, richwmiller:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Since order matters, he has 5 choices for the first patient, 4 for the second (since he can't see the same person twice), 3 for the third, 2 for the fourth, and one for the fifth.
Multiply these choices out to get 5*4*3*2*1=120
So there are 120 different possibilities.
Alternatively, you can use the permutation formula with n=5 and r=5 to get and you'll get the same answer
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
First of all i would like to meet this doctor who takes the bus!
Second I would like to meet a doctor who visits homes!
This person is not in the USA for sure!
It sounds like their are basically only two choices . Which bus?
If I am reading it right, he follows the same route visiting patients no matter which bus he takes.
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