Question: STUDENT READING HABITS A survey of 100 college students who frequent the reading lounge of a university revealed the following results:
40 read Time.
30 read Newsweek.
25 read U.S. News & World Report.
15 read Time and Newsweek.
12 read Time and U.S. News & World Report.
10 read Newsweek and U.S. News & World Report.
4 read all three magazines.
How many of the students surveyed read
a. At least one of these magazines ?
b. Exactly one of these magazines?
c. Exactly two of these magazines?
d. None of these magazines?