2+5+8+11+14+17+20+...........=?
look for combos or just add
2+8 + 20 + 5 + 11+14 +17 =
10+25+25 + 17 =
60 + 17 = 77
I think you are asking for the sum of a series.
You are starting with 2 and there is a difference of 3. There is a formula to calculate this total and it won't be 77.