Blood group

Number of students

A

9

B

6

AB

3

O

12

Total

30

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.

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Solution

Number of students having blood group AB = 3

Total number of students = 30

Hence, required probability,

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Similar questions

\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. 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}

Q. 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

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

Blood group	A	B	O	AB
Number of students	11	9	14	6

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

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

Number of students having blood group AB = 3 Total number of students = 30 Hence, required probability,

Blood group

Number of students

A

9

B

6

AB

3

O

12

Total

30

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.

Number of students having blood group AB = 3

Total number of students = 30

Hence, required probability,