If vecP=i+j+2k and vecQ=3i-2j+k, the unit vector perpendicular to both

1.	If vecP=i+j+2k and vecQ=3i-2j+k, the unit vector perpendicular to both vecP and vecQ is
Answer» `(hati+hatj-hatk)/(SQRT(3))` `5(hati+hatj-hatk)` `(1)/(sqrt(3)) (hati-hatj+hatk)` `(1)/(25)(hati+hatj-hatk)` Answer :A

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