If ${ }^{(n-1)} C_r=\left(k^2-3\right){ }^n C_{r+1}$, then an interval containing the values of $k$, is

If ${ }^{(n-1)} C_r=\left(k^2-3\right){ }^n C_{r+1}$, then an interval containing the values of $k$, is
  1. $(-\infty,-3]$
  2. $[-2,-\sqrt{3})$
  3. $[-\sqrt{3}, \sqrt{3}]$
  4. $(-\infty,-\sqrt{2}]$

Solution

No solution. Refer to answer key.

Asked in: AP EAMCET 2017 (26 Apr Shift 2)

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