



 
Timothy, It sounds like you need to schedule 105 talks. That is 10 in 5 of the weeks, and 11 in the other 5. How about doing this:
And so on. The number of talks per week alternates 10, 11, 10, 11, ... The speakers are the next consecutive group of students, where you wrap around to student 1 following number 15. Victoria  


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