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Q45. If 10C4 + 10C5 = 11Cr, then r equals:

Mathematics — Permutation, Combination and Probability — Question 45 of 302

A. 6
B. 4
C. 5
D. 3

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If 10C4 + 10C5 = 11Cr, then r equals: | Mathematics MCQ #45 | Examora | Examora