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In a group of students, there are 24 opt...

In a group of students, there are 24 opting for photography and 26 opting for acting cource. Find the number of students, which are in photography course or in acting coure in the following cases: (i) Two courses are conducted at the same time. (ii) Two courses are conducted at the different time and 8 people are interested in both the courses.

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(i) 50
(ii) 42
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