A) 2 and 9
B) 3 and 2
C) 2/3 and 9
D) 3/2 and \[6\]
Correct Answer: C
Solution :
\[{{T}_{1}}={}^{n}{{C}_{0}}=1\] ?..(i) \[{{T}_{2}}={}^{n}{{C}_{1}}ax=6x\] ?..(ii) \[{{T}_{3}}={}^{n}{{C}_{2}}{{(ax)}^{2}}=16{{x}^{2}}\] ?..(iii) From (ii), \[\frac{n!}{\left( n-1 \right)\,!}a=6\] Þ \[n\,a\,=\,6\] ?..(iv) From (iii), \[\frac{n(n-1)}{2}\,{{a}^{2}}=16\] ?..(v) Only is satisfying equation (iv) and (v).You need to login to perform this action.
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