Q21------------------in a test in which 120 students appeared ,90 passed in history ,65 ....... .
Q21------------------in a test in which 120 students appeared ,90 passed in history ,65 passed in sociology and 75 passed in political science .#0 students passed in only in one subject and 55 students in two only.five students passed in no subject.how many students passed in at least two subject.a.85 b.95 c.90d.data insufficient