Question

Given the set A={1,2,3} and the set B = {-3,-2,-1,0}, what is the total number of elements in AxB ? Help please

Answer 1

how many ordered pairs can you make?

(1,-3)(1,-2),(1,-1),(1,0)
(2,_3)(2,-2).......
(3.................

there are 12

Answer 2

How did you get that I don't understand

Answer 3

AxB is the set of ordered pairs that you can make with elements of A as the first component and elements of B as the second component

so we try and list all the possible pairs

Answer 4

Oh I get it thank you

Answer 5

AxB= {(1,-3),(1,-2),(1,-1),(1,0),
(2,-3),(2,-2),(2,-1),(2,0),
(3,-3),(3,-2),(3,-1),(3,0)}