Question 375313
Make a Venn Diagram so you understand this!
M=math, H=history, M'=non math, U=union, n=intersection
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a) M U H = (19+35+34)/100 = 88/100 = 22/25
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b) M' n H' = (100-88)/100 = 12/100 = 3/25
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c) H n M' = 34/100 = 17/50
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Ed