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Question of the day
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Question of the Day (04-Jul-18)

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In a class in a certain school, there are 25 students. Four students are appointed monitors every day. At the end of a term, it is found that every possible pair of students have been monitors together exactly once. How many days are there in the term?
OPTIONS
 
 1)30
 2)50
 3)60
 4)75
 5)None of these

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