Question

Va rog repede!!!!
E URGENT!!!
Ex. 19

Answer 1

a) (A\B) u C

A\B = {b}

{b} u C = {b,c,d,e}

b) (A\C) n B

A\C = {a,b}

{a,b} n B = {a}

c) (B\C) u (A\Ø)

B\C = {a}

A\Ø = {a,b,c}

{a} u {a,b,c} = {a,b,c}

d) A u B u C

AuB = {a,b,c,d}

{a,b,c,d} u C = {a,b,c,d,e}

e) A n B n C

AnB = {a,c}

{a,c} n C = {c}

f)(AnB)\C

AnB = {a,c}

{a,c}\C = {a}