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Class 11MathematicsPermutations and CombinationsCombinationsExpert
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If (^{n}C_{3}=4,^{n}C_{2}), what is the value of (n)?

Answer and explanation

Correct answer: (14)

The ratio is (\frac{^{n}C_{3}}{^{n}C_{2}}=\frac{n-2}{3}), so (n=14). In exams write the ratio first.

Related tags

CombinationsNcrIdentityPermutations And CombinationsMathematicsClass 11 Mcq
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