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Q: A,B,C,D,E, and F are 6 students. In how many ways they can seat in a row if:

A) There is no restriction

B) A must seat at the beginning and F must seat at the end of a row,

C) A and B must seat beside each other.

 Dec 4, 2019
edited by tdsantiago1  Dec 4, 2019
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A) The number of ways is 6! = 720.

 

B) The number of ways is 5! = 120.

 

C) The number of ways is 6*4! = 144.

 Dec 8, 2019

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