Question

State if true or false .
A {1,2} B {3,4}

A*(B∩∅) = ∅.

Answer 1

what do you mean by '*' ?

Answer 2

MULTIPLIED

Answer 3

@waterineyes you know this ?

Answer 4

\[A\times(B∩∅) \]\[=A\times∅\]\[=\]

Answer 5

∅ .. so true right @UnkleRhaukus ?

Answer 6

im not sure what happens when you multiply a set by the null set,

Answer 7

that my teacher taught is a ∅ , i wern't sure about what happens with B∩∅ .. SO THANKS UNKLE :)

Answer 8

actually i think an empty product is equal to one
\[A\times\emptyset=1\]

Answer 9

really ?