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Evaluate the Determinant $\left| \begin{array} { l l } 9 & 2 \\4 & 7\end{array} \right|$

Question 52

Multiple Choice

Evaluate the determinant.
- $\left| \begin{array} { l l } 9 & 2 \\4 & 7\end{array} \right|$

A) 55
B) -55
C) 71
D) -10

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