Question

In the sample of $50$ people, $21$ has type $"O"$ blood, $22$ has type $"A"$ blood, $5$ has type $"B"$ blood and $2$ has type $"AB"$ blood. If a person is selected at random find the probability that the person not have type $"AB"$ blood

• A. $\frac{24}{25}$
• B. $\frac{2}{25}$
• C. $\frac{14}{25}$
• D. None of these

Answer 1

Answer: (A)

$\frac{24}{25}$

P(does not have AB blood)

$=\frac{Total-PeoplehavingAB}{Total}$

$=\frac{50-2}{50}=\frac{24}{25}$