1. Calculate the Median, 3rd decile, and 60th percentile for the data:

\begin{tabular}{|c|c|c|c|c|c|c|}
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Marks & 0 & 10 & 20 & 30 & 40 & 50 \\
\hline
No. of Students & 150 & 140 & 100 & 90 & 80 & 70 \\
\hline
\end{tabular}