Question
In how many ways can 12 girls be seated in a row of 50
seats so that no girl sits on the adjacent seat?Solution
There are 49 vacant seats among 50 seats. If no two girls sit together then the total number of seats will be=49-12=37 Â Hence, the total way of seating 12 girls on 37 seats is =37P12 =37!/25!
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