Question:
If n+1Cr+1: nCr: n-1Cr-1 = 55: 35: 21 then the value of n + r is _____.
If n+1Cr+1: nCr: n-1Cr-1 = 55: 35: 21 then the value of n + r is _____.
Updated On: Jul 14, 2024
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Correct Answer: 16
Solution and Explanation
The correct answer is 16.
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