Question

# Three persons enter a railway compartment. If there are 5 seats vacant, in how many ways can they take these seats? (a) 60 (b) 20 (c) 15 (d) 125

Solution

## (a) 60 Three persons can take 5 seats in 5C3 ways. Moreover, 3 persons can sit in $3!$ ways. ∴ Required number of ways = MathematicsRD Sharma XI (2015)Standard XI

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