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\left. \begin{array} { | c | c | c | c | } \hline 5 & { 4 } & { 9 } \\ \hline 6 & { 3 } & { ? } \\ \hline 7 & { 2 } & { 4 } \\ \hline 65 & { 20 } & { 45 } \\ \hline \end{array} \right. |
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Answer» the value missing is 1 explain the value of last row is first row * (second + third) row |
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