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13.10 Probabilities with combinations

Interactive practice questions

Evaluate $\nCr{7}{2}$7C2.

Easy
< 1min

Find the value of $\binom{7}{3}$(73).

Easy
1min

Find the value of $\binom{10}{9}$(109).

Easy
< 1min

Evaluate $\frac{\nCr{10}{5}}{\nCr{10}{6}}$10C510C6.

Easy
1min
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