Question

Dane są zbory A={11,13,15,17} B={11,12,13,15,17,21,23}.
Wyznacz:
A∧B
A∨B
A\B
B\A

Answer 1

A ∧ B = {11,13,15,17} = A
A ∨ B = {11,12,13,15,17,21,23} = B
A \ B = Ф
B \ A = {12,21,23}

Answer 2

A ∧ B = {11,13,15,17} = A
A ∨ B = {11,12,13,15,17,21,23} = B
A \ B = Ф
B \ A = {12,21,23}