How do I find torque direction?

Question

In each case, the force vector F and the rod both lie in the plane of the page, the rod has length 4.00m, and the force has magnitude 19.0N.

http://session.masteringphysics.com/problemAsset/1037911/6/YF-10-37.jpg

Which of these options apply to each of these cases?
into the page
out of the page
to the right
upward
the torque is zero

Answer 1

Use a 'right hand rule' let the radius be your fingers making 90 degrees with the palm then the thumb will point in the direction of the moment and the rotation will follow your fingers.

in example
a) T= rxF counterclockwise direction
b) T= r F sin(60) counterclockwise direction
c) T=r F sin(30)counterclockwise direction
and so on