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What is the coefficient of the middle term of (z + y)^3x, if 3x is considered to be even and the middle term is the 4^th term?(a) ^7C3(b) ^6C2(c) ^6C3(d) ^7C2This question was addressed to me by my school teacher while I was bunking the class.The origin of the question is Binomial Theorem in portion Binomial Theorem of Mathematics – Class 11

Answer»

Correct option is (a) ^7C3

The explanation is: SINCE the MIDDLE term is the FOURTH term

Considering 3x to be EVEN, \((\frac{3x + 1}{2})^{th}\) term = 4

x = 7/3

Therefore, the fourth term coefficients are ^7C3



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