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Halp me va rog , Dau coroana..................

Halp Me Va Rog Dau Coroana class=

Răspuns :

a) 1,2,3,∈N
b)1/2, 3/4,8∈Q+
c)2/3,9/5,6/7∈Q+/N
d)4,5,6 ∈N\Q+