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A trust has 25 members . (i) How many ...

A trust has 25 members .
(i) How many ways 3 officers can be selected ?
(ii) In how many ways can a president, Vice president and a Secretary be selected ?

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The correct Answer is:
`^(25)P_(3)`
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PREMIERS PUBLISHERS-COMBINATORICS AND MATHEMATICAL INDUCTION-EXERCISE 4.3
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