Answer:
=18
Step-by-step explanation:
Answer:
Step-by-step explanation:
A cone is a three-dimensional closed figure that has a circular base connected to a vertex (or apex) point outside the plane of the base. Similar Cross Sections. (parallel to base) • The one and only base of the cone is a circle (or other curved figure).
a. The events are mutually exclusive, so

b. For the same reason,

Another way to see this is to use the result from part (a), and the inclusion/exclusion principle:

and the right side reduces to 0.
c. Same as (b),

d. Same as (b),

We can also use the distributivity rule for unions and intersections to write

e. If the
is the complement of
, then by DeMorgan's law,
