1. А∩В={a,f,k}; А∪В={m, n, a, f, k}
2. А∩В={14}; А∪В={7;10,11,12,13,14;21}
3. А∩В={7,14,21}; А∪В={7,14,21}
1. А∩В={a,f,k}; А∪В={m, n, a, f, k}
2. А∩В={14}; А∪В={7;10,11,12,13,14;21}
3. А∩В={7,14,21}; А∪В={7,14,21}