DIRECTIONS for questions 21 to 24 Answer the questions on the basis of the information given below
Hari, Rahul and Pranav were analysing data on the number of students in a class who like each subject among Chemistry, Physics, Botany and Zoology Each student in the class likes at least one of these four subjects
Hari classified the four subjects into three groups - Hard Science (HS) comprising Chemistry and Physics as one group, Botany (B) as a separate group and Zoology (Z) as a separate group.
Rahul also classified the four subjects info three groups - Dull Subjects (DS) comprising Zoology and Physics as one group, Chemistry (C) as a separate group and Botany (B) as a separate group.
Pranav also classified the four subjects into three groups - Important Subjects (S) comprising Botany and Zoology as one group. Physics (P) as a separate group and Chemistry (C) as a separate group
Any student who likes at least one subject in a group is said to have a preference for the group Each of Hari Rahul and Pranav made a Venn diagram,which is provided below, providing information on the number of students who
have a preference for the groups that he has defined.