If A and B are the coefficient of xn in the expansion of (1 + x)2n and – InterviewSolution

InterviewSolution

1.	If A and B are the coefficient of xn in the expansion of (1 + x)2n and (1 + x)2n – 1 respectively, then AB=___________.
Answer» If A and B are the coefficient of xⁿ in the expansion of (1 + x)²ⁿ and (1 + x)^{2n – 1} respectively, then $\frac{A}{B} =$ ___________.

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