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

# The Coefficient Of xk in The Expansion Of E = 1 + (1 + x) + (1 + x)2 +…+ (1 + x)n is

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## Question

### Solution

Correct option is

We have E = 1 + (1 + x) + (1 + x)2 +…+ (1 + x)n

Thus, coefficient of xk in E

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