A) 180
B) 184
C) \[-184\]
D) 84
E) none of these
Correct Answer: C
Solution :
\[[\overrightarrow{a}\,\,\overrightarrow{b}\,\,\overrightarrow{c}]=\left| \begin{matrix} 2 & -3 & -7 \\ 3 & -1 & 2 \\ 4 & 5 & -1 \\ \end{matrix} \right|\] \[=2(1-10)+3(-3-8)-7(15+4)\] \[=2(-9)+3(-11)+-7(19)\] \[=-18-33-133=-184\]You need to login to perform this action.
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