If \( \mathrm{n} \) objects are arranged in a row, then the number of ways of selecting three ob... VIDEO
If \( \mathrm{n} \) objects are arranged in a row, then the number of ways of selecting three objects so that no two of them are next to each other is
\( \mathrm{P} \)
(A) \( \frac{(n-2)(n-3)(n-4)}{6} \)
(B) \( \quad{ }^{n-2} C_{3} \)
W.
(C) \( { }^{n-3} C_{3}+{ }^{n-3} C_{2} \)
(D) none of these.
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