From a committee of 8 persons, in how many ways can we choose a chairman and a vice chairman, assuming one person can’t hold more than one position?

Explanation

Number of ways in which a chairman and vice-chairman can be chosen from amongst a grọup.on 8 persons assuming that one person cannöt hold more than one position.

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= ^8 P_2= 8 !/(8-2) !=8 !/6 !=8 xx 7 xx 6 !/6 !=56
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