Following are the ages (in years) of 360 patients, getting medical treatment in a hospital:
Age10−2020−3030−4040−5050−6060−70(in years) Number of patients905060805030
One of the patients is selected at random.
What is the probability that his age is
(i) 30 years or more but less than 40 years?
(ii) 50 years or more but less than 70 years?
(iii) 10 years or more but less than 40 years?
(iv) 10 years or more?
(v) less than 10 years?