Please answer all Let A 123 and B Ujv Find Ax B Find BxA

Please answer all

Let A = { 1-2,3} and B = {Ujv}. Find Ax B Find BxA Find BxB Flow many elements are in AxB. BxA. and BxB?

Solution

a)

u , 2u , 3u , v , 2v, 3v

b)

u , 2u , 3u , v , 2v, 3v

c)

uv , u^2 , v^2 , vu

d)

AxB there are 6

BxA there are 6

BxB there are 4