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QUESTION Evaluate the following determinants:

$\left|\begin{array}{ccc}2&amp;4&amp;6\\1&amp;3&amp;2\\-1&amp;5&amp;7\end{array}\right|,
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\left|\begin{array}{ccc}1&amp;7&amp;8\\-2&amp;4&amp;3\\1&amp;9&amp;0\end{array}\right|,
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\left|\begin{array}{cccc}4&amp;5&amp;6&amp;1\\2&amp;4&amp;0&amp;7\\0&amp;0&amp;1&amp;3\\2&amp;1&amp;0&amp;3\end{array}\right|.$

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ANSWERS

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34\hspace{1.5cm}-182\hspace{1.5cm}162



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