In how many ways 3 persons seat on 7 seats. ?
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y they want to seat in 7 seats they all take one one simple
alwaystopper:
your answer is wrong see there are total 7 seats so 1st person has choice to sit any one of them then 2nd person has choice of 6 seats and 3rd person has choice of 5 seats so the answer is 7×6×5 it is the question of factorial of principle of counting
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