1.

If the coefficients of 2nd , 3rd and 4th terms of the expansion of (1+x)^(2n) are in A.P. then the value of 2n^2 -9n + 7 is

Answer»

`2n^2+9N+7=0`
`2n^2-9n+7=0`
`2n^2 +9n - 7 =0`
`2n^2 +9n -7 =0`

ANSWER :B


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