In the expansion of (1+x)^ 43 , if the coefficients of (2r+1)^ th and (r+2)^ th terms are equal, then what is the value of r (r 1)?

NDA 2018 Mathematics question

In the expansion of , if the coefficients of and terms are equal, then what is the value of r ?

Answer: (B)

The coefficients are and . They are equal

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Question ID VK-028814