Read the two statements and choose the correct option.

I. $P(A \cup B) = P(A) + P(B)$ for any two events $A$ and $B$.

II. $P(A') = 1 - P(A)$ for any event $A$.

Explanation

1. 01

   I is false: in general $P(A \cap B)$ must be subtracted; the plain sum holds only for mutually exclusive events.

2. 02

   II is true: $A$ and $A'$ are mutually exclusive and exhaustive, so $P(A) + P(A') = 1$.