Question

The probability of a day being rainy is 0.75, then the probability of it not being a rainy day is .

• A. $0.79$
• B. $0.25$
• C. $0.50$
• D. $0.36$

Answer 1

The correct option is B $0.25$

Given that probability of a day being rainy is $\mathrm{0.75.}$
$P\left(E\right)+P\left(E^{\prime }\right)=1$
So, probability of the day not being rainy is $1-0.75=0.25$