f th coefficient of 2nd, 3rd, 4th terms in the expansion (1+x)2n are in A.P., show that 2n2-9n+7=0...

Asked by aryan-Srivastava | 21st Mar, 2014, 12:52: PM

Expert Answer:

Answered by  | 21st Mar, 2014, 02:57: PM

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