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February 23rd, 2012, 12:43 PM   #1
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Combination/Permutation

Hey guys, i need help for solving this 2 problems:

1.There are 40 students in one class. The teacher definded 6 different titles for projects and told them to form groups of maximum 8 students and to choose a project. How many possible ways there are?

2.There are 20 students.They need to form groups of maximum 4 students, and at least 2 students. How many possible ways there are?
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