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
power of 2 gmatprep
This topic has expert replies
Source: Beat The GMAT — Problem Solving |
-
gmataug08
- Master | Next Rank: 500 Posts
- Posts: 105
- Joined: Sat May 17, 2008 8:12 pm
- Thanked: 6 times
the sequence is in the form
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
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
