The table given below shows the ages of 75 teachers in a school .

A teacher from this school is chosen at random . What is the probability that the selected teacher is
(i) 40 or more than 40 years old ?
(ii) of an age lying between 30-39 (including both) ?
(iii) 18 years or more old and 49 years or less ?
(iv) 18 years or more old ?
(v) above 60 years of age ?

Answer

`(i) (3)/(5) (ii) (9)/(25) (iii) (67)/(75) (iv) 1 (v) 0 `