Question

7.Completati numerele care lipsesc: 1, 3, 6, 10, 15, 21, _, _, 45.
Incercuieste litera corespunzatoare raspunsului corect.
a.9 si 9,
b.28 si 36,
c.30 si 40,
d.37 si 38.

Answer 1

1,3,6,10,15,21,28,36,45
litera b corect