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A logic problem by Chung Kevin

Logic Level 1

\[ \begin{array} { l l l l l }
& & 2 & W \\ \times & & & W \\ \hline & 1 & 2 & W \\ \end{array} \]

What is the digit \(W\)?

0 1 5 6

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Excel in math and science

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by Chung Kevin

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