Show-that-C-n-k-C-n-k-1-C-n-1-n-k-

Tinku Tara June 3, 2023 None 0 Comments

Question Number 141311 by SOMEDAVONG last updated on 17/May/21

Show that ,C_n ^k +C_n ^(k−1) =C_(n+1) ^(n−k)

$$\mathrm{Show}\:\mathrm{that}\:,\mathrm{C}_{\mathrm{n}} ^{\mathrm{k}} +\mathrm{C}_{\mathrm{n}} ^{\mathrm{k}−\mathrm{1}} =\mathrm{C}_{\mathrm{n}+\mathrm{1}} ^{\mathrm{n}−\mathrm{k}} \\ $$

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