The blood groups of 30 students of class VIII are given in the following frequency distribution table:
|
Blood group |
Number of students |
|
A |
9 |
|
B |
6 |
|
AB |
3 |
|
O |
12 |
|
Total |
30 |
Number of students having blood group AB = 3
Total number of students = 30
Hence, required probability, P = 3/30
= 1 / 10
