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A=2,4,6,8SI B=1,5,7,9 A/B si B/A

Răspuns :

B/A =ce are b si nu are a A/B =cu ce are a si nu are b
A/B ce se include in A si ce nu se include in B
B/A ce se include in B si ce nu se include in A
A/B=2 4 6 8 
B/A 1 5 7 9