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Six new employees, two of whom are married to each other, are to be assignedsix desks that are lined up in a row. If the assignment of employees to desksis made randomly, what is the probability that the married couple will havenonadjacent desks? |
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Answer» Let the couple occupied adjacent desks consider those two as 1. There are (4+1)i.e., 5 persons to be assigned. `therefore"Number of ways of assigning these five person"=5!xx2!` `"Total number of ways of assigning 6 persons"=6!` `therefore"Probability that the couple has adjacent desk"=(5!xx2!)/(6!)=(2)/(6)=(1)/(3)` `"Probility that the married couple will have non-adjacent desks "=1-(1)/(3)=(2)/(3)` |
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