Question

What is $c$ in the probability formula?

Answer 1

Complement in probability:

• The “$c$" in probability means complement.
• It is the probability of an event not occurring.
• If $P\left(A\right)$ is the probability of an event $A$occuring, $P\left(A^c\right)$ is the probability of the event $A$not occurring.
• Since the total probability is unity, $\mathit{P}\left(A^c\right)\mathbf{=}\mathbf{}\mathbf{1}\mathbf{-}\mathit{P}\left(A\right)$.

Hence, $c$is the complement symbol used in probability.