1993 AJHSME Problems/Problem 24
Problem
What number is directly above in this array of numbers?
\[\begin{tabular}{cccccc}& & & 1 & &\\ & & 2 & 3 & 4 &\\ & 5 & 6 & 7 & 8 & 9\\ 10 & 11 & 12 &\cdots & &\\ \end{tabular}\] (Error compiling LaTeX. Unknown error_msg)