Question

Stabiliti valoarea de adevar a propozitiilor:
a)1,5 ∈ Z
b) -3∉ Z
c) -2,5∉Z
d) -2 ∈ Z-N
e)N-Z=Ф
f) N u Z=Z

Answer 1

a)F b)F c)A d)A e) A f) A

Answer 2

$a) F \\ b) F \\ c)F \\ d) F \\ e)A \\ f)A$