SOLUTION: there are 4 gates in a college. in how many ways can a person enter the college by a gate and leave by a different gate?

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Question 845485: there are 4 gates in a college. in how many ways can a person enter the college by a gate and leave by a different gate?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

there are 4 gates in a college. 

in how many ways can a person enter the college by a gate and leave by a different gate?

4 Choices to enter, 3 to leave.  4%2A3+=+12