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There are 200 individuals with a …

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There are 200 individuals with a skin disorder, 120 had been exposed to the chemical C1, 50 to chemical C2 and 30 to both C1 and C2. Find the number of individuals exposed to Chemung C1 but not to chemical C2.
  • 2 answers

Himanshu Kumar 5 years, 10 months ago

Exposed to C1=setA (denote) ". ". C2=setB n(A-B)=n(A) - n(A intersection B) =120-30=90

Himanshu Kumar 5 years, 10 months ago

90
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