Question

If A = {1, 2, 3, 4}, B = {2, 5}, and C = {3, 4, 7}, determine A X B; B X A; A ∪ (B X C); (A ∪ B) X C; (A X C) ∪ (B X C).

Answer 1

I don't know what does A X B mean. would you please explain me?

Answer 2

Axb i think you have to put in in numbers thats what I'm trying to get help in

Answer 3

muliply

Answer 4

I think It may be something like A X B ={ (a,b) |(a in A and b in B}, but not sure. is it familiar to you?