The blood groups of 30 students of Class VIII are recorded as follows:
$A, B, O, O, A B, O, A, O, B, A, O, B, A, O, O,$
$A, A B, O, A, A, O, O, A B, B, A, O, B, A, B, O$ .
Use this table to determine the probability that a student of this class, selected at random, has blood group $A B$ .

Open in App

Solution

Blood group No. of students
A 9
B 6
O 12
AB 3
Total 30
Number of students having blood group $A B = 3$
Total students $= 30$
P $= \frac{3}{30} = \frac{1}{10}$

Suggest Corrections

Similar questions

The blood groups of 30 students of class IX are recorded as follows:

$\begin{matrix} A, & B, & O, & O, & A B, & O, & A, & O, & B, & A, & O, & B, & A, & O, & O, A, & A B, & O, & A, & A, & O, & O, & A B, & B, & A, & O, & B, & A, & B, & O, \end{matrix}$

A student is selected at random from the class from blood donation. Find the probability that the blood group of the students chosen is:

(i) A (ii) B (iii) C (iv) O

Q. The blood groups of 30 students of Class VIII are recorded as follows:
A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O, A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O.
By representing this data in a frequency distribution table, find out the most common and the rarest blood group among these students.

The blood groups of $30$ students of Class VIII are recorded as follows:
$A, B, O, O, A B, O, A, O, B, A, O, B, A, O, O,$
$A, A B, O, A, A, O, O, A B, B, A, O, B, A, B, O$ .
Represent this data in the form of a frequency distribution table. Which is the most common, and which is the rarest, blood group among these students?

Q. The blood groups of 30 students of class VIII are recorded as follows:
A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O,
A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O

Represent this data in the form of a frequency distribution table. Find out which is the most common and which is the rarest blood group among these students.

A group of students from a school decided to donate blood. The blood groups of 16 students of class X are recorded as follows:

A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O, AB. Find the probability of blood group

a) O

b) A

Join BYJU'S Learning Program

Blood group	No. of students
A	9
B	6
O	12
AB	3
Total	30

The blood groups of 30 students of Class VIII are recorded as follows:A,B,O,O,AB,O,A,O,B,A,O,B,A,O,O,A,AB,O,A,A,O,O,AB,B,A,O,B,A,B,O.Use this table to determine the probability that a student of this class, selected at random, has blood group AB.

Blood group No. of students A9 B 6 O 12 AB 3 Total 30 Number of students having blood group AB=3Total students =30P =330=110

The blood groups of 30 students of Class VIII are recorded as follows:
$A, B, O, O, A B, O, A, O, B, A, O, B, A, O, O,$
$A, A B, O, A, A, O, O, A B, B, A, O, B, A, B, O$ .
Use this table to determine the probability that a student of this class, selected at random, has blood group $A B$ .

Blood group No. of students
A 9
B 6
O 12
AB 3
Total 30
Number of students having blood group $A B = 3$
Total students $= 30$
P $= \frac{3}{30} = \frac{1}{10}$