Даны множества А={2,3,8} ,В={2,3,8,11},С={5,11} Найдите : 1)А u B, A n C, B n C,2)A u B ,...

Question

Даны множества А={2,3,8} ,В={2,3,8,11},С={5,11} Найдите : 1)А u B, A n C, B n C,2)A u B , A u C, B u C

Answer 1

1)
A∪B={2,3,8,11}
A∩C=∅
B∩C={11}
2)
A∪B={2,3,8,11}
A∪C={2,3,8,5,11}
B∪C={2,3,8,5,11}