Question

If vector(a,b,c) are three non-coplanar vectors represented by concurrent edges of a parallelepiped of volume 4 cubic units, find the value of vector((a + b).(b x c) + (b + c).(c x a) + (c + a).(a x b))

Answer 1

Let vector(a,b,c) be the concurrent edges of parallelepiped

Given, 

Volume of parallelepiped = 4 cubic units