The following table shows the blood-groups of employees in a bank. Event C is : ‘the blood-group of an employee is AB.’
| Blood - group | A | B | AB | O |
| No. of employees | 20 | 40 | 15 | 25 |
If an employee is chosen at random, what is the probability that his blood-group is AB ?
Fill in the following boxes and find the answer.
