Question
5 persons P, Q, R, S, and T are sitting around a round
table. How many times can they sit in different ways so that Q and T do not sit together? type-sscSolution
P, Q, R, S and T Total letters = 5 Now this is the way to sit around the round table = (5-1)! =4! =4×3×2=24 Now to put together a Q and T=3! ×2! =12 Not put together Q and T=24-12=12
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