Easy Exponents question, how did I miss? : GMAT Problem Solving (PS)
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 18 Jan 2017, 18:24

### 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

# Easy Exponents question, how did I miss?

Author Message
TAGS:

### Hide Tags

Intern
Joined: 14 Jan 2010
Posts: 12
Followers: 0

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

Easy Exponents question, how did I miss? [#permalink]

### Show Tags

29 May 2010, 21:41
00:00

Difficulty:

(N/A)

Question Stats:

100% (01:14) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

Help,

Taking practice tests and missed this seamingly simple question.

$$2^5 + 2^5 + 2^5 +3^5 + 3^5 + 3^5$$

answer was $$2^6 + 3^6$$

(i'm new so for all exponents is ^)

Thanks in advance, what is the fast or easy way of solving this, and how could I be a moron and miss this question.
Senior Manager
Joined: 19 Nov 2009
Posts: 326
Followers: 5

Kudos [?]: 89 [0], given: 44

Re: Easy Exponents question, how did I miss? [#permalink]

### Show Tags

29 May 2010, 22:14
i think it should be $$2^5 + 2^5 +3^5 + 3^5 + 3^5 --> 2 * 2^5 + 3 * 3^5 --> 2^6 + 3^6$$
_________________

"Success is going from failure to failure without a loss of enthusiam." - Winston Churchill

As vs Like - Check this link : http://www.grammar-quizzes.com/like-as.html.

Intern
Joined: 14 Jan 2010
Posts: 12
Followers: 0

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

Re: Easy Exponents question, how did I miss? [#permalink]

### Show Tags

30 May 2010, 06:38
maybe i don't clearly understand the adding of exponents. How do you end up multiplying them to make the correct answer 1 exponent higher than the original problem? I guess I need a lot of help.

Thanks.
Rachel
Founder
Affiliations: AS - Gold, HH-Diamond
Joined: 04 Dec 2002
Posts: 14433
Location: United States (WA)
GMAT 1: 750 Q49 V42
GPA: 3.5
Followers: 3716

Kudos [?]: 22983 [1] , given: 4513

Re: Easy Exponents question, how did I miss? [#permalink]

### Show Tags

31 May 2010, 12:40
1
KUDOS
Expert's post
Rachcu13 wrote:
maybe i don't clearly understand the adding of exponents. How do you end up multiplying them to make the correct answer 1 exponent higher than the original problem? I guess I need a lot of help.

Thanks.
Rachel

You can actually write math symbols using the M tag - see the "Formatting and Formulas Help" link when you reply to my message, so you can make your posts very articulate.

As to the formulas/etc - you are not supposed to be able to add exponents except in this case where you have identical expressions because $$2^5+2^5$$ is the same as or can be expressed as $$2^5*2$$, which in turn is $$2^5 * 2^1 = 2^6$$ - you have two identical expressions.

If you memorized your shortcuts, you would know that $$2^5 = 32$$ and 32+32 = 64, which is $$2^6$$, so you see the pattern.

Same with the 3's except here you need 3 components; you would need 4 with 4's and so on.

Good Luck!
_________________

Founder of GMAT Club

US News Rankings progression - last 10 years in a snapshot - New!
Just starting out with GMAT? Start here...
Need GMAT Book Recommendations? Best GMAT Books

Co-author of the GMAT Club tests

GMAT Club Premium Membership - big benefits and savings

Re: Easy Exponents question, how did I miss?   [#permalink] 31 May 2010, 12:40
Similar topics Replies Last post
Similar
Topics:
exponents question 2 18 Jul 2011, 08:17
1 exponents question 7 16 Jul 2011, 09:23
1 Easy One... But some how I'm confused 5 04 Jul 2010, 07:47
Exponent Question 7 06 Jan 2008, 16:43
2 Exponents and English Words Question 2 13 Jan 2010, 21:51
Display posts from previous: Sort by