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OpenStudy (anonymous):
An elementary school class consists of 12 girls and 8 boys. Four children must be selected for a game. How many different selections of 4 children are possible if: no additional restriction is placed? there should be an equal number of boys and girls?
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OpenStudy (anonymous):
For no restrition: 12 C 4 equal boys and girls: 12 C 2 and 10 C 2
OpenStudy (anonymous):
why isn't no restrictions 20C4 4!
OpenStudy (anonymous):
yes its 20 C 4 sorry
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