Six new employees, two of whom are married to each other, are to be assigned six desks that are lined up in a row. If the assignment of employees to desks is made randomly, what is the probability that the married couple will have nonadjacent desks?

[Hint: First find the probability that the couple has adjacent desks, and then subtract it from 1.]

0 9 Views | Posted 3 months ago
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    Answered by

    Payal Gupta | Contributor-Level 10

    3 months ago

    This is a short answer type question as classified in NCERT ExemplarWordALGORITHMhas9letters.Numberofdeskoccupiedbyonecouple=1Only(4+1)=5personstobeassigned.Numberofwaysofassigningthese5persons=5!×2!Totalnumberofwaysofassigningthese6persons=6! Probabilitythatacouplehasadjacentdesk=5!×2!6!=13So,theprobabilitythatthemarriedcouplewillhavenoadjacentdesks=113=23Hence,therequiredprobability=23.

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