Question

The value of the determinant $\left| \begin{matrix} 1 & 2 & 3 \\ 3 & 5 & 7 \\ 8 & 14 & 20 \end{matrix} \right|$is.

• A. 20
• B. 10
• C. 0
• D. 250

Answer 1

Answer: (C)

0

Answer 2

$\left| \begin{matrix} 1 & 2 & 3 \\ 3 & 5 & 7 \\ 8 & 14 & 20 \end{matrix} \right| = 2 - 8 + 6 = 0$.