- #1
Juwane
- 87
- 0
In probability, the rule of addition is:
[tex]P( A \cup B) = P(A) + P(B) - P(A \cap B)[/tex]
This can be written as
[tex]P( A \cup B) = P(A) + P(B) - P(A)P(B)[/tex]
However, I've seen that using both formulas for the same problem gives different answers in some problems. Does anyone know why? Is there a condition for applying the second formula?
[tex]P( A \cup B) = P(A) + P(B) - P(A \cap B)[/tex]
This can be written as
[tex]P( A \cup B) = P(A) + P(B) - P(A)P(B)[/tex]
However, I've seen that using both formulas for the same problem gives different answers in some problems. Does anyone know why? Is there a condition for applying the second formula?