21. A dormitory hallway of 25 girls is selecting several groups to host socials. They need two groups of 4 girls, two gr
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21. A dormitory hallway of 25 girls is selecting several groups to host socials. They need two groups of 4 girls, two gr
21. A dormitory hallway of 25 girls is selecting several groups to host socials. They need two groups of 4 girls, two groups of 3 girls, two groups of 2 girls and a group of 7 girls for the semester finale. How many possibilities exist?
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