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Number of ways in which 7 people can occ...

Number of ways in which 7 people can occupy six seats, 3 seats on each side in a first class railway compartment if two specified persons are to be always included and occupy adjacent seats on the same side, is `(k). 5 !` then `k` has the value equal to: 2 (b) 4 (c) 8 (d) None of these

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