A unit vector perpendicular to P=3i-2j+2k and Q=-4i+2j-3k is

Kindly refer to the link given below for an answer to a  similar query :
https://www.meritnation.com/ask-answer/question/q-determine-a-unit-vector-perpendicular-to-vectors-2i-2j-2/motion-in-a-plane/5490369