Question

URGENT
ex 2 va rog 2. Indicati perechile de multimi disjuncte: a) (2; 1; 31 şi (4; 5); b) (1) şi
2); c) (0, 1) şi (2; 1); d) (1) şi (2); e) (0; 1) si (0; 21; 1) (0, 21 si
3. Se dau mulţimile: A-11; 2; 3; 4; 5; 6; 7) B-14; 5; 7; 8; 9, 10) şi C-11;

Answer 1

3)

a={1,2,3,4,5,6,7}

b)={4,5,,7,8,9,10}

c={1,5,,9,11}

A) A∩B={1,2,3,4,5,6,}∩{4,5,7,8,9,10}={4,5}

B∩C={4,5,,8,9,10}∩{1,5,9,11}={5,9}

B) AUB={1,2,3,4,5,6,7,8,9,10}=10

BUC={1,4,5,7,8,9,10,11}=8

AUC={1,2,3,4,5,6,7,9,11}=9