Mark the correct alternative in each of the following:
If in the expansion of \( (1+x)^{15} \), ... VIDEO
Mark the correct alternative in each of the following:
If in the expansion of \( (1+x)^{15} \), the coefficients of \( (2 r+3)^{\text {th }} \) and \( (r-1)^{\text {th }} \) terms are equal, then the value of \( r \) is
(A) 5
(B) 6
(C) 4
(D) 3
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