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OpenStudy (anonymous):
Find D intersection E. D: {children between the ages of 5 and 7} E: {a 10 year old child}
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OpenStudy (anonymous):
The answer is that its undefined because no one is in group D and in group E in the same time. No one is between 5 and 7 and also 10 yrs old
OpenStudy (anonymous):
D intersection E will be Null set or empty set
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