SOLUTION: At a museum, there are 4 entrances and 6 exits. In how many ways can two persons enter together at the same gate but exit at different gates?

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Question 550029: At a museum, there are 4 entrances and 6 exits. In how many ways can two persons enter together at the same gate but exit at different gates?
Answer by nasa(3) About Me  (Show Source):
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there are 24 ways