A) 255
B) 61
C) 127
D) none of these
Correct Answer: B
Solution :
[b] \[{{\left( x+\frac{1}{x}+{{x}^{2}}+\frac{1}{{{x}^{2}}} \right)}^{15}}={{\left( \frac{{{x}^{3}}+x+{{x}^{4}}+1}{{{x}^{2}}} \right)}^{15}}\] \[=\frac{{{a}_{0}}+{{a}_{1}}x+{{a}_{2}}{{x}^{2}}+...+{{a}_{60}}{{x}^{60}}}{{{x}^{30}}}\] Hence, the total number of terms is 61.You need to login to perform this action.
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