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Fie multimile: A={x∈N|x=2^b+2^a, unde a, b∈{0, 1, 2}}
B={y∈N*|y=x-1,x∈A}
C={z∈N|z=Y^C+1,c∈{0,1}, yVB}
a) Determinati multimile A, B si C
b) calculati: AUB, A∩B, B-A, A∩B∩C, AUBUC, (A∩B) U(B∩C), (AUB)∩(B-C), (A-B)∩(C-A)