A) \[\frac{10!}{5!\,6!}\]
B) \[\frac{10\,!}{{{(5\,!)}^{2}}}\]
C) \[\frac{10\,!}{5\,!\,7\,!}\]
D) None of these
Correct Answer: B
Solution :
Here, index = 10, an even number, therefore, middle term is \[{{\left( \frac{10+2}{2} \right)}^{th}}\] i.e. 6th term. Also,\[{{T}_{6}}\,\,=\,\,{}^{10}{{C}_{5}}\,{{x}^{5}}\]ÞCoefficient of middle term \[={}^{10}{{C}_{5}}.\]You need to login to perform this action.
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