Use Venn diagrams to verify the following two relationships

for any events A and B $($these are called De Morgan$$s laws$)$:

a$.($A $$ B$)95$ A$9$ B$9$

b$.($A $$ B$)95$ A$9$ B$9$

$[$Hint: In each part, draw a diagram corresponding to the

left side and another corresponding to the right side