Students' Glossary

Students can add definitions and terminologies related to P, C, M.

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C

ⁿC_r + ⁿC_r-1= ⁿ⁺¹C_r
$\frac{C \left(n+1,r+1\right)}{n+1}=\frac{C \left(n,r\right)}{r+1}$