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Binomial Theorem question

2025 · 3 Apr · Shift 2 · Q48

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PYQ Library
JEE Main
Mathematics
Binomial Theorem
2025 · 3 Apr · Shift 2 · Q48

Binomial Theorem question

2025 · 3 Apr · Shift 2 · Q48

JEE MainMathematicsBinomial TheoremNumerical+4 / −1

Let

\left(1+x+x^2\right)^{10}=a_0+a_1 x+a_2 x^2+\ldots+a_{20} x^{20}

. If

\left(a_1+a_3+a_5+\ldots+a_{19}\right)-11 a_2=121 k

, then

k

is equal to

\underline{\hspace{2cm}}

.

Numerical answer

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