Question

If A and B are any two events, then $P ( A \cup B ) =$

• A. $P ( A ) + P ( B )$
• B. $P ( A ) + P ( B ) + P ( A \cap B )$
• C. $P ( A ) + P ( B ) - P ( A \cap B )$
• D. $P ( A ) . P ( B )$

Answer 1

Answer: (C)

$P ( A ) + P ( B ) - P ( A \cap B )$

Answer 2

It is a fundamental concept.