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NDA 2013

Exam: NDA
Year: 2013
Subject: Mathematics
Chapter: Permutation and Combination

NDA 2013 · Mathematics · Permutation and Combination

If P(77,31)=x and C(77,31)=y , then which one of the following is...

If

\mathrm{P}(77,31)=x

and

\mathrm{C}(77,31)=y

, then which one of the following is correct?

Options

A $x=y$
B $2 x=y$
C $77 x=31 y$
D $x > y$

Correct answer

D. $x > y$

Step-by-step solution

x=(31!y) \quad \therefore \quad x > y

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