Chapter 1.1, Problem 6E

If $P\left(A\right)=0.5,P\left(B\right)=0.6,$ and $P\left(A\cap B\right)=0.4,$ find

(a) $P\left(A\cup B\right)$,

(b) $P\left(A\cap B\text{'}\right)$

And (c) $P\left(A\text{'}\cup B\text{'}\right)$