what is the probability of the event ‘not A’.

Question:

If $\frac{2}{11}$ is the probability of an event, what is the probability of the event 'not $A$ '.

 

Solution:

It is given that $P(A)=\frac{2}{11}$.

Accordingly, $P($ not $A)=1-P(A)=1-\frac{2}{11}=\frac{9}{11}$

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