TS EAMCET 7 May 2018 Shift 1 Solved Paper

Section: Mathematics

Question : 17 of 160

Marks: +1, -0

If the coefficient of r th , (r + 1) th and (r + 2) th terms in the expansion of (1+x)n are respectively in the ratio 2 : 4 :5 , then (r , n) =

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