Question

Dau 28 de puncte! Urgent! Dau coroană,5 stele,multumesc si mă abonez .
ex:6,8,10​

Answer 1

Răspuns:

Explicație pas cu pas:

ex6

A={4,5,6,7},  B={4,5,6,7},  C={4,5,6,7},  D={3,4,5,6,7,8,9}, E={0,2,4}.

⇒A=B, A=C, B=C.

ex8

M={11,21,31,...,91}

a) card M = 9, deoarece multimea M are 9 elemente,

M={11,21,31,41,51,61,71,81,91}

b) {11,21,31,41}, {11,21,31.51}, {11,21,31,61}

c) {11,21,31,41,51,61,71,81}, {11,21,31,41,51,61,71,91}, {21,31,41,51,61,71,81,91},

{11,21,31,41,51,61,81,91}, {11,21,31,41,51,71,81,91}, {11,21,31,41,61,71,81,91},

{11,21,31,51,61,71,81,91}, {11,21,41,51,61,71,81,91}, {11,31,41,51,61,71,81,91}.

ex9

M={0,1,7}

a) ∅, {0}, {1}, {7}, {0,1}, {0,7}, {1,7}, {0,1,7}.

b) X={∅, {0}, {1}, {7}, {0,1}, {0,7}, {1,7}, {0,1,7}}.

c) card X = 8