MCQMediumJEE Main 2026 · 23 January, Shift 1Binomial Expansion

Mathematics Question from JEE Main 2026 · 23 January, Shift 1

The sum of all possible values of nNn \in \mathbb{N}, so that the coefficients of xx, x2x^2 and x3x^3 in the expansion of (1+x2)2(1+x)n(1+x^2)^2(1+x)^n are in arithmetic progression is :

  • A

    99

  • B

    33

  • C

    77

  • D

    1212

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