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[" (14.) Prove that "^(n-1)C(3)+^(n-1)C(...

[" (14.) Prove that "^(n-1)C_(3)+^(n-1)C_(4)>^(n)C_(3)" ,if "n>7],[15" .If "^(n)C_(r-1)=36,^(n)C_(r)=84" and "^(n)C_(r+1)=126," find nand "r],[" ANSWERS "]

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