Answer B & C are correct because P(A) + P(B) + P(C) add up to 1
Answer:
Less than one
Step-by-step explanation:
Answer: 
Step-by-step explanation:
We need to apply the following identity:

Then, applying this, you know that for
:

We need to remember that:
and 
Therefore, we need to substitute these values into
.
Then, you get:



Answer:
7x7/6x4
Step-by-step explanation: