TS ICET 2017 Question Paper with Solutions for online practice

Question : 131 of 200

Marks: +1, -0

If the coefficients of the 21st and 22nd terms in the expansion of

(1 + x)^44

are equal, then x =

Solution:

x={^44{C}_{20}}/{^44{C}_{21}}=\;\;{23!\;21!}/{24!\;20!}={21}/{24}={7}/{8}

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