ex 7 Va rog frumos din suflet ( a,b,c,d,)

Răspuns:
7.a) (2, 4, 6, 8, 10, 12, 14)
b) (3, 6, 9, 12, 15, 18, 21)
c) (5, 10, 15, 20, 25, 30, 35)
d) (8, 16, 24, 32, 40, 48, 56)
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