The below frequency distribution table represents the blood groups of $30$ students of a class. Use this table to determine the probability that a student of this class, selected at random, has blood group $A B$ .
Blood group Number of students
A 9
B 6
AB 3
O 12
Total 30

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Solution

Total students= $30$
Number of students with blood group AB=3
Required probability= $\frac{3}{30} = \frac{1}{10}$
Ans

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\begin{matrix} Blood group & Number of students A & 9 B & 6 AB & 3 O & 12 Total & 30 \end{matrix}

The above frequency distribution table represents the blood groups of 30 students of a class. Use this table to determine the probability that a student of this class, selected at random, has blood group AB.

Question 13
$\begin{matrix} Blood group & Number of students A & 9 B & 6 AB & 3 O & 12 Total & 30 \end{matrix}$
The above frequency distribution table represents the blood groups of 30 students of a class. Use this table to determine the probability that a student of this class, selected at random, has blood group AB.

Q. You were to prepare a frequency distribution table regarding the blood groups of

30

students of a class, Use this table to determine the probability that a student of this clss, selected at random, has blood group

A B

Q. Question 13

\begin{matrix} B l o o d g r o u p & N u m b e r o f s t u d e n t s A & 9 B & 6 A B & 3 O & 12 T o t a l & 30 \end{matrix}

Blood group	Number of students
A	9
B	6
AB	3
O	12
Total	30

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The below frequency distribution table represents the blood groups of 30 students of a class. Use this table to determine the probability that a student of this class, selected at random, has blood group AB.Blood groupNumber of studentsA9B6AB3O12Total30

Total students=30Number of students with blood group AB=3Required probability=330=110Ans

The below frequency distribution table represents the blood groups of $30$ students of a class. Use this table to determine the probability that a student of this class, selected at random, has blood group $A B$ .
Blood group Number of students
A 9
B 6
AB 3
O 12
Total 30

Total students= $30$
Number of students with blood group AB=3
Required probability= $\frac{3}{30} = \frac{1}{10}$
Ans