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The value of sum(r=0)^(n-1)^n Cr//(^n Cr...

The value of `sum_(r=0)^(n-1)^n C_r//(^n C_r+^n C_(r+1))` equals a. `n+1` b. `n//2` c. `n+2` d. none of these

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CENGAGE ENGLISH-PERMUTATIONS AND COMBINATIONS-All Questions
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