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OpenStudy (anonymous):
C = Number of Children in the Study A = Number of NonChildren in the Study. C+A≥40 C≤30
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geerky42 (geerky42):
Ok, so we can see that C+A have to be greater than 40 and that C only can be up to 30. So with C at its maximum possible value, we have A ≥ 10
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