Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 27 May 2015, 12:36

### GMAT Club Daily Prep

#### Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

# Events & Promotions

###### Events & Promotions in June
Open Detailed Calendar

# 2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + 2^7 + 2^8 a. 2^9 b.

Author Message
TAGS:
Manager
Joined: 05 Dec 2005
Posts: 92
Location: Manhattan Beach, CA
Followers: 1

Kudos [?]: 0 [0], given: 0

2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + 2^7 + 2^8 a. 2^9 b. [#permalink]  04 May 2006, 14:53
2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + 2^7 + 2^8

a. 2^9

b. 2^10

c. 2^16

d. 2^35

e. 2^37

the long way is obvious - what's the short cut?
VP
Joined: 29 Dec 2005
Posts: 1349
Followers: 7

Kudos [?]: 32 [0], given: 0

Re: Exponents [#permalink]  04 May 2006, 17:05
consultinghokie wrote:
2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + 2^7 + 2^8
a. 2^9
b. 2^10
c. 2^16
d. 2^35
e. 2^37

2 + 2 + 2^2 = 2^3
2 + 2 + 2^2 + 2^3 = 2^4
2 + 2 + 2^2 + 2^3 + 2^4 = 2^5

so the pattern keeps on continue

2 + 2 + 2^2 + ............+ 2^8 = 2^9
2 + 2 + 2^2 + ............+ 2^9= 2^10.
2 + 2^2 + .............. + 2^10 = 2^11
.
.
.
.
2 + 2^2 + .............. + 2^99 = 2^100
VP
Joined: 06 Jun 2004
Posts: 1059
Location: CA
Followers: 2

Kudos [?]: 50 [0], given: 0

Agree with Professor's approach and it should be 2^9
_________________

Don't be afraid to take a flying leap of faith.. If you risk nothing, than you gain nothing...

Manager
Joined: 27 Mar 2006
Posts: 136
Followers: 1

Kudos [?]: 1 [0], given: 0

Agree with 2^9
VP
Joined: 29 Apr 2003
Posts: 1405
Followers: 2

Kudos [?]: 18 [0], given: 0

Yep, getting 2^9 also.
Similar topics Replies Last post
Similar
Topics:
2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + 2^7 + 2^8 ? a) 2^9 b) 8 04 Jul 2008, 12:18
2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + 2^7 + 2^8 = 2^9 2^10 6 12 Apr 2008, 11:37
2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + 2^7 + 2^8 = a) 2^9 b) 3 10 Dec 2007, 11:54
2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + 2^7 + 2^8 = 2^9 2^10 4 14 Jun 2006, 16:19
2 + 2 + 2^2 + 2^3 + 2^4 + 2^5 + 2^6 + 2^7 + 2^8 = ? 1) 2^9 9 29 May 2006, 15:46
Display posts from previous: Sort by