Răspuns:
A ={2,3,4}
B={3,4,5,6,8}
a∈A ; b∈B
A ∩ B={3,4}
a/b=3/3=1
a/b=4/4=1
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b ∈ B = {6, 8}
a ∈ B = {3, 4}
b/a=6/3=6:3=2
b/a=8/4=8:4=2
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