1.

100 students appeared for two examination. 60 passed the first, 50 passed the second and 30 passed both. Find the probability that a student selected at random has passed at least one examination.

Answer»

100 students appeared for two examination. 60 passed the first, 50 passed

the second and 30 passed both. Find the probability that a student

selected at random has passed at least one examination.



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