Question

Sa se determine multimile X si Y stiind ca:
a) XUY={1,2,3,4,5,6,7}
b) X\Y={1,3}
c)X are trei elemente

Answer 1

a) XUY={1,2,3,4,5,6,7}
b) X\Y={1,3}
c)X are trei elemente

X={1,2,3}={1,3,4,,}={1,3,5}={1,3,6}={1,3,7}
Y={2,4,5,6,7}

ptr ca x sa aiba trei elemente poate sa aiba obligatoriu 1 si 3 si al treilea poate fi 2,4,5,6,7

Answer 2

X={1,2,3},Y={2,4,5,6,7}
X={1,3,4},Y={2,4,5,6,7}
X={1,3,5},Y={2,4,5,6,7}
X={1,3,6},Y={2,4,5,6,7}
X={1,3,7},Y={2,4,5,6,7}