Question

There are 200 individuals with a skin disorder 120 had been exposed by chemical A 50 to chemical B and 30 by both chemical A and B find
I》number of individual exposed to chemical a note to chemical b
||》 chemical B but not to chemical A
|||》 chemical a or chemical b

Answer 1

Answer:

Step-by-step explanation:

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Answer 2

Answer:

Step-by-step explanation:

See here