SOLUTION: in how many ways can nine students be seated in a row containing nine desks if two students must not be seated next to each other? my thinking is 9!2! because u have 9 students but
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-> SOLUTION: in how many ways can nine students be seated in a row containing nine desks if two students must not be seated next to each other? my thinking is 9!2! because u have 9 students but
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Question 548056: in how many ways can nine students be seated in a row containing nine desks if two students must not be seated next to each other? my thinking is 9!2! because u have 9 students but 2 of them have a stipulation ... Answer by scott8148(6628) (Show Source):
if you view the pair as a unit; there are 8 positions for the pair,
___ times 2 for the arrangement of the pair,
___ times 7! for the arrangement of the other students
