ladybug5162 ladybug5162

26-04-2024
Mathematics

contestada

Given positive integers r > 1, n > 2 and the coefficient of (3r)th and (r + 2)th terms in the binomial expansion of (1+x)2n are equal, then
A. n = 2r
B. n = 2r +1
C. n = 3r
D. None of these

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