Ce numar urmeaza logic in seria: 172, 84, 40, 18, ...?
1si8	16.67%	4	16.67%
2si7	62.50%	15	62.50%
3si6	12.50%	3	12.50%
4si5	4.17%	1	4.17%
5si4	4.17%	1	4.17%
Total:		24 vote(s)	100%