A) \[^{15}{{C}_{6}}{{2}^{6}}\]
B) \[^{15}{{C}_{5}}{{2}^{5}}\]
C) \[^{15}{{C}_{4}}{{2}^{4}}\]
D) \[^{15}{{C}_{8}}{{2}^{8}}\]
Correct Answer: B
Solution :
\[(15-r)(1)+r(-2)=0\,\,\Rightarrow 15-3r=0\Rightarrow r=5\] Thus term independent of x is \[={{\,}^{15}}{{C}_{5}}{{(1)}^{10}}{{(2)}^{5}}={{\,}^{15}}{{C}_{5}}{{2}^{5}}\].You need to login to perform this action.
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