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MCQMediumJEE Main 2024 · 27 January, Shift 1Combinations (C(n,r))

Mathematics Question from JEE Main 2024 · 27 January, Shift 1

Equation image showing $$^{n-1}C_r = (k^2 - 8)\, ^nC_{r+1}$$ followed by the words if and only if:
  • A

    22<k≤32\sqrt{2} < k \le 3

  • B

    23<k≤322\sqrt{3} < k \le 3\sqrt{2}

  • C

    23<k<332\sqrt{3} < k < 3\sqrt{3}

  • D

    22<k<232\sqrt{2} < k < 2\sqrt{3}

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