Duration: 11:11

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\begin{tabular}{l|l|c|c}
\multicolumn{2}{c|}{ Column I } & \multicolumn{2}{c}{ Column II } \\
\hline (A) & \multicolumn{1}{c}{ ff \( a_{1}, a_{2}, a_{3}, \ldots \) are in AP and } & (p) & \( \alpha=2 \beta \) \\
\( a_{1}+a_{4}+a_{7}+a_{14}+a_{17}+ \) \\
\( a_{20}=165 \), \\
\( \alpha=a_{2}+a_{6}+a_{15}+a_{19} \) and \\
\( \beta=2\left(a_{9}+a_{12}\right)-\left(a_{3}+a_{18}\right) \), & & & \\
& \( \begin{array}{l}\mid c \\
\text { Column I } \\
\text { then }\end{array} \) & & \\
\hline
\end{tabular}
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