Find the coefficient of xn in the expansion of 1-x2 nA- 2 n C nB- 2 n C 2 nC- 2 nD- 2 n C n -1

The correct option is A 2nCn T_r+1= ^2nC_r × (x)^r We want to find the coefficient as x^n ⇒ r = n ⇒ co efficient = ^2nC_r = ^2nC_n ...

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Sum of binomial coefficients of odd numbered terms

Find the coef...

Question

Find the coefficient of $x^{n}$ in the expansion of $(1 + x)^{2 n}$

²ⁿC_n

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²ⁿC_{n - 1}

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²ⁿC_2n

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Solution

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Similar questions

The middle term in the expansion of $(x^{2} + \frac{1}{x^{2}} + 2)^{n}$ is:

x^{n}

(1 + x) (1 - x)^{n}

x^{n}

(1 + x) (1 - x)^{n}

(1 + x)^{n}

(1 + x)^{n}

n

2^{n d}

{(1 + x)}^{n}

11 : 10

{(1 + x)}^{n}

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