Let the coefficients of the middle terms in the expansion of ( 1 6 + x )^4, (1-3 x)^2 and (1- 2x )^6, 0,...

Question

Let the coefficients of the middle terms in the expansion of ( 1 6 + x )^4, (1-3 x)^2 and (1- 2x )^6, >0, respectively form the first three terms of an A.P. If d is the common difference of this A.P., then 50- 2d ^2 is equal to

Accepted Answer

57

JEE Main Mathematics question

Solution

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