A) \[\sqrt{\pi }\]
B) e
C) 1
D) 0
Correct Answer: D
Solution :
\[\Delta =\left| \,\begin{matrix} 1 & 5 & \pi \\ 1 & 5 & \sqrt{5} \\ 1 & 5 & e \\ \end{matrix}\, \right|\,=0\] \[(\because \,\,{{\log }_{a}}a=1\text{ and }5{{C}_{1}}\equiv {{C}_{2}})\]
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