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

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