Question:medium

If the term free from \( x \) in the expansion of \( \left(\sqrt{x} - \frac{k}{x^2}\right)^{10} \) is 405, then the value of \( k \) is

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Constant term → power of variable = 0.
Updated On: Apr 23, 2026
  • $\pm 1$
  • $\pm 3$
  • $\pm 4$
  • $\pm 2$
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The Correct Option is B

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