Which number in the array below is both the largest in its column and the smallest in its row? (Columns go up and down, rows go right and left.)
\begin{array}[t]{ccccc} 10 & 6 & 4 & 3 & 2 \\ 11 & 7 & 14 & 10 & 8 \\ 8 & 3 & 4 & 5 & 9 \\ 13 & 4 & 15 & 12 & 1 \\ 8 & 2 & 5 & 9 & 3 \end{array}
Pick one
Solution
The largest numbers in the first, second, third, fourth and fifth columns are respectively. Of these, only is the smallest in its row .
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