Technical information
Behaviour being used: Adaptive mode
Minimum fraction: 0
Question summary: Fie o progresie aritmetică [a subscript 1 comma space a subscript 2 space end subscript comma space... space comma space a subscript n space] în care a1=-2/9 şi r=-1/2. Suma primilor 17 termeni este:
Right answer summary: The content can not be displayed.
Question state: todo