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Prove or disprove (Posted on 2016-02-11) Difficulty: 3 of 5
There are 20 students, each has a choice of anywhere from 0 to 6 courses from a total of 6 courses offered.

Prove or disprove:
There are 5 students and 2 certain courses such that all 5 have chosen both courses or all 5 have chosen neither of them.

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
No Subjectarmando2016-02-15 16:35:24
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