Let $\vec a,\vec b$ and $\vec c$ be three vectors. Then scalar triple product $[\vec a\,\vec b\,\vec c]$ is equal to
Answer & explanation
Correct answer: option 4
Using cyclic nature of scalar triple product.
$[\vec a\,\vec b\,\vec c]=[\vec b\,\vec c\,\vec a]=[\vec c\,\vec a\,\vec b]$
So, option (4) is correct.