Answer:B
Step-by-step explanation:
Answer:
my mom
OOOO
Step-by-step explanation:
huh 12x*5
Note that the two events are mutually exclusive. If the question is answered correctly on the first try, there's no need to give it another attempt. So

.
We're given that

and

. From the first probability, we know that

. By definition of conditional probability,


We're interested in the probability of either

or

occurring, i.e.

. Apply the inclusion-exclusion principle, which says

We know the probability of intersection is 0, and we know

. Meanwhile, by the law of total probability, we have

so we end up with
No clue, sorry ... about that