Question

From group of 8 students , the chief student councillor and 2 deputy chief councillor need to be selected. In how many ways can it be done

Answer 1

Answer:

First, select three from eight: eight factorial divided by three factorial, 8 x 7 x 6 divided by 3 x 2 x 1 equals 56. You can select three people out of eight in 56 different ways.

Now, select one from three: three factorial divided by two factorial divided by one factorial, which is 3. You can select one person out of a group of three in only three different ways.

Combining these results, you can select the combination in 168 = 56 x 3 different ways.

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