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  • Group:
  • GMAT
  • Topic:
  • GMAT Question of the Day
  • Posted by:
  • brad S.

During the past week, a local medical clinic tested N individuals for two infections. If 1/3 of those tested had infection A and, of those with infection A, 1/5 also had infection B, how many individuals did not have both infection A and B?

A) N/15
B) 4N/15
C) N/5
D) 14N/15
E) 4N/5

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