Somehow not able to recognize the pattern (or maybe I was too tired at 2am).
2+2+2^2+2^3+.....+2^8=?
Ans[spoiler] 2^8[/spoiler]
2+2+2^2+2^3+.....+2^8=?
Ans[spoiler] 2^8[/spoiler]
2 + 2^1 + 2^2 = 2^3
2^3 + 2^3 = 2^4
2^4 + 2^4 = 2^5 .........
so finally it would be 2^9.
ps: have coloured to show the value at each point of addition of the sequence.
concept courtesy : Cramya
