Pyetja
Gjej shumat e serive që vijojnë.
- $3 + 7 + 11 + 14 + \dots$ (20 kufiza)
- $2 + 6 + 10 + 14 + \dots$ (15 kufiza)
- $30 + 27 + 24 + 21 + \dots$ (40 kufiza)
- $5 + 1 + -3 + -7 + \dots$ (14 kufiza)
- $5 + 7 + 9 + \dots + 75$
- $4 + 7 + 10 + \dots + 91$
- $34 + 29 + 24 + 19 + \dots + -111$
- $(x + 1) + (2x + 1) + (3x + 1) + \dots + (21x + 1)$
