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3 and 4 .Determinants and Matrices
easy
$\left| {\,\begin{array}{*{20}{c}}{19}&{17}&{15}\\9&8&7\\1&1&1\end{array}\,} \right| = $
A
$0$
B
$187$
C
$354$
D
$54$
Solution
(a) $\left| {\,\begin{array}{*{20}{c}}{19}&{17}&{15}\\9&8&7\\1&1&1\end{array}\,} \right|\, = 19 – 34 + 15 = 0$.
Standard 12
Mathematics