In a medical examination of students of a class, the following blood g

In a medical examination of students of a class, the following blood groups are recorded: Blood group A B AB O Number of students 11 15 8 6 From this class, a student is chosen at random. What is the probability that the chosen student has blood group AB?(a) 1320(b) 38(c) 15(d) 1140

Answer» In a medical examination of students of a class, the following blood groups are recorded:

Blood group	A	B	AB	O
Number of students	11	15	8	6

From this class, a student is chosen at random. What is the probability that the chosen student has blood group AB?

(a)

\frac{13}{20}

(b)

\frac{3}{8}

(c)

\frac{1}{5}

(d)

\frac{11}{40}