Find the torque of a force `7hati - 3hatj - 5hatk` about the origin which acts on a particle whose position vectors is `hati + hatj - hatk`

Explanation

To find the torque of a force about the origin acting on a particle, we can use the formula for torque, which is given by the cross product of the position vector and the force vector:

\[ \vec{\tau} = \vec{r} \times \vec{F} \]

### Step-by-step Solution:

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