Cross Product of Column Matrices
Definition of the Cross product for column matrices u × v
 u and v must represent 3D vectors.
 The result represents a 3D vector.
 If vector u is represented by
u = (u_{i} , u_{j} , u_{k} )^{T}

and if vector v is represented by
v = (v_{i} , v_{j} , v_{k} )^{T}.

Then
u × v =
(
u_{j} v_{k}  u_{k} v_{j} ,
u_{k} v_{i}  u_{i} v_{k} ,
u_{i} v_{j}  u_{j} v_{i}
)^{T}.
There is a pattern in how this is formed. Look at it a bit.
But don't even think of memorizing it.
QUESTION 11:
What is:
(1, 2, 3)^{T} × (0, 0, 0)^{T} ?