Competitive Quantitative Aptitude Permutation and Combination Permutation and Combination

Medium

If ${ }^{2 n} C_{r} = { }^{2 n} C_{r+2}$,find $r$.

A
$n-1$
B
$n-2$
C
$n-4$
D
$n-3$

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Competitive Questions

Competitive

Quantitative Aptitude Questions

Chapter

Permutation and Combination

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Permutation and Combination

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