In a year group of 63 students, 22 study Biology, 26 study Chemistry, and 25 study Physics. 18 study both Physics and Chemistry, 4 study both Biology and Chemistry, and 3 study both Physics and Biology. 1 student studies all three subjects.
(1) Display this information on a Venn diagram.
(2) How many students study:
- i** Biology only
- ii** Physics or Chemistry
- iii** none of Biology, Physics, or Chemistry
- iv** Physics but not Chemistry?