Răspuns:
Explicație pas cu pas:
22
a) A={-3,-2,-1,0,1,2,3,4}
b) B={-2,-1,0,1,2,3,4,5,6}
c)C={0,1,2,3,4,5,6,7,8}
d) D={-5,-4,-3,-2,-1,0,1,2,3,4,5,6}
23
a) fals (N are elemente intregi pozitive)
b) adevarat (Z cuprinde numere intregi pozitive si negative)
c) adevarat
d) fals (N* inseamna numere naturale nenule (fara 0) adica 1, 2, 3...infinit)
e) adevarat (nu apare 0)
f)adevarat N⊂Z
