In a railway compartment, 6 seats are vacant on a bench. In how many ways can 3 passengers sit on them?

In a railway compartment, 6 seats are vacant on a bench. In how many ways can 3 passengers sit on them? Correct Answer 120

3 জন লোক 6টি সিটে বসতে পারে = 6P3 উপায়ে = 6!(6 - 3)!উপায়ে = 6!3!উপায়ে = 6.5.4.3!3!উপায়ে = 6.5.4উপায়ে = 120উপায়ে
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