1. {0, 1, 3, 4, 6}; 2. {4, 6}.
Explanation:
1. А={0, 1, 2, 3}, B={2, 4, 5, 6}, C={2, 5, 7, 9}; (A∪B)-(B∩C)-?
a) A∪B⇔{0, 1, 2, 3, 4, 5, 6};
b) B∩C⇔{2, 5};
c) (A∪B)-(B∩C)⇒{0, 1, 3, 4, 6}.
2. A={4, 6, 8, 10}, B={4, 6, 8}, C={1, 2, 3, 4, 7}, D={3, 5, 6, 7}; A∩(D∪(B∩C))=?
a) B∩C⇔{4};
b) D∪(B∩C)⇔{3, 4, 5, 6, 7};
c) A∩(D∪(B∩C))⇒{4, 6}.