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Difference of Two Sets

In how many w...

Question

In how many ways can a club consisting of $20$ people choose a president, a secretary, and a treasurer?

A

^{20} C_{3}

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B

^{20} C_{3} \times 3!

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C

^{20} C_{3} \times 3!

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D

20^{3}

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Solution

The correct option is B $^{20} C_{3} \times 3!$
The number of ways = $^{20} C_{3} \times 3!$

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