The following table shows the blood groups of 40 students of a class.

1.	The following table shows the blood groups of 40 students of a class. Blood groupABOABNumber of students119146 One student of the class is chosen at random. What is the probability that the chosen studet has blood group (i) O? (ii) AB?
Answer» The following table shows the blood groups of 40 students of a class. $\begin{matrix} Blood group & A & B & O & A B Number of students & 11 & 9 & 14 & 6 \end{matrix}$ One student of the class is chosen at random. What is the probability that the chosen studet has blood group (i) O? (ii) AB?

The following table shows the blood groups of 40 students of a class. Blood groupABOABNumber of students119146 One student of the class is chosen at random. What is the probability that the chosen studet has blood group (i) O? (ii) AB?

Answer»

$\begin{matrix} Blood group & A & B & O & A B Number of students & 11 & 9 & 14 & 6 \end{matrix}$

One student of the class is chosen at random. What is the probability that the chosen studet has blood group (i) O? (ii) AB?