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Binomial Theorem question

2020 · 6 Sep · Shift 2 · Q34

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PYQ Library
JEE Main
Mathematics
Binomial Theorem
2020 · 6 Sep · Shift 2 · Q34

Binomial Theorem question

2020 · 6 Sep · Shift 2 · Q34

JEE MainMathematicsBinomial TheoremMCQ+4 / −1

If the constant term in the binomial expansion of

{\left( {\sqrt x - {k \over {{x^2}}}} \right)^{10}}

is 405, then |k| equals :

A
3
B
9
C
1
D
2

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