The unit vector normal to the plane containing a = I - j - k and b = I + j + k is

The unit vector normal to the plane containing vec(a)=(hat(i)-hat(j)-hat(k)) and vec(b)=(hat(i)+hat(j)+hat(k)) is

A unit vector perpendicular to the plane of a = 2i - 6j -3k, b = 4i + 3j - k is

A unit vector normal to the plane through the point I, 2j, 3k is

A unit vector normal to the plane through the points i,2j and 3k is

A unit vector perpendicular to the plane of vec a = 2i-6j-3k and vec b = 4i+3j-k is

A unit vector parallel to the sum of the vectors 2 i + 3j -k and 4i + 2j + k is

The unit vector perpendicular to each of the vectors 2i - j + k and 3i + 4j - k is