An organisation has $25$ members, $4$ of whom are teachers. In how many ways can a committe

Question

An organisation has $25$ members, $4$ of whom are teachers. In how many ways can a committee of $3$ members be selected so as to include at least one teacher?

Accepted Answer

$970$

Permutation and Combination - Selections with Restrictions

Permutation and Combination - Selections with Restrictions

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