12th Class
Mathematics
Sample Paper
Maths Olympiad Model Paper-1
question_answer
A student appears for test I, II and III. The student is successful if he passes either in tests I and II or tests I and III. The probabilities of the student passing in test I, II and III are p, q and \[\frac{1}{2}\]respectively. If the probability that the student is successful is,\[\frac{1}{2}\]then: