The value of ${1^2}.{C_1} + {3^2}.{C_3} + {5^2}.{C_5} + ...$ is

$n{\left( {n - 1} \right)^{n - 2}} + n{.2^{n - 1}}$

$n{\left( {n - 1} \right)^{n - 2}}$

$n\left( {n - 1} \right){.2^{n - 3}}$

JEE MATHEMATICS MCQ: BINOMIAL THEOREM

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The value of

{1^2}.{C_1} + {3^2}.{C_3} + {5^2}.{C_5} + ...

View answer and explanation

Correct option: D

None of these

The correct answer is D (None of these) because the given options do not match the derived expression for the sum of the series.

Practice All Chapter MCQs →

\left({ }^{10} C_0\right)^2-\left({ }^{10} C_1\right)^2+\ldots-\left({ }^{10} C_9\right)^2+\left({ }^{10} C_{10}\right)^2

a

d

\left( {n + 1} \right)

a{C_0} - \left( {a + d} \right){C_1} + \left( {a + 2d} \right){C_2} - ... + ...

(1-x)^{201}\left(1+x+x^2\right)^{200}

\left(\frac{1}{x}+2 x\right)^n

{x^5}

\frac{{1 + {x^2}}}{{1 + x}},\left| x \right| < 1,

\left(\begin{array}{c}2 n+1 \\ 0\end{array}\right)+\left(\begin{array}{c}2 n+1 \\ 3\end{array}\right)+\left(\begin{array}{c}2 n+1 \\ 6\end{array}\right)+\ldots=170

n