Simplify: \(^{n}C_{r} ÷ ^{n}C_{r-1}\)

Question 1 Report

Simplify: \(^{n}C_{r} ÷ ^{n}C_{r-1}\)

\(\frac{n(n-r)}{r}\)

\(\frac{n}{r(n-r)}\)

\(\frac{1}{r(n-r)}\)

\(\frac{n+1-r}{r}\)

Permutation And Combinations

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