﻿ If A and B are coefficients of xn in the expansions of (1 + x)2n and (1 +x)2n–1 respectively, then A/B is equal to : Kaysons Education

If A and B are Coefficients Of xn in The Expansions Of (1 + x)2n and (1 +x)2n–1 respectively, Then A/B is Equal To

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Question

Solution

Correct option is

2

We know that coefficient of xr in the expansion of (1 + x)m is mCr.

SIMILAR QUESTIONS

Q1

is a polynomial of degree

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If n > I then value of the expression is

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Q10

The coefficient of xk in the expansion of E = 1 + (1 + x) + (1 + x)2 +…+ (1 + x)n is