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Difference between revisions of "2024 AMC 10A Problems/Problem 21"
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==Solution==
 
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|12 29 46 63 80|
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|12 24 36 48 60|
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|12 19 26 33 40|
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|12 14 16 18 20|
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|12  9  6  3  0|
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submitted by Astingo

Revision as of 17:28, 8 November 2024

Problem

The numbers, in order, of each row and the numbers, in order, of each column of a $5 \times 5$ array of integers form an arithmetic progression of length $5{.}$ The numbers in positions $(5, 5), \,(2,4),\,(4,3),$ and $(3, 1)$ are $0, 48, 16,$ and $12{,}$ respectively. What number is in position $(1, 2)?$ \[\begin{bmatrix} . & ? &.&.&. \\ .&.&.&48&.\\ 12&.&.&.&.\\ .&.&16&.&.\\ .&.&.&.&0\end{bmatrix}\] $\textbf{(A) } 19 \qquad \textbf{(B) } 24 \qquad \textbf{(C) } 29 \qquad \textbf{(D) } 34 \qquad \textbf{(E) } 39$

Solution

|12 29 46 63 80| |12 24 36 48 60| |12 19 26 33 40| |12 14 16 18 20| |12 9 6 3 0| submitted by Astingo

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