few good PS qs. : PS Archive
Check GMAT Club Decision Tracker for the Latest School Decision Releases http://gmatclub.com/AppTrack

 It is currently 19 Jan 2017, 14:24

### 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

# few good PS qs.

 post reply Question banks Downloads My Bookmarks Reviews Important topics
Author Message
Manager
Joined: 02 Oct 2009
Posts: 93
Followers: 1

Kudos [?]: 39 [0], given: 2

few good PS qs. [#permalink]

### Show Tags

09 Oct 2009, 03:38
1
This post was
BOOKMARKED
00:00

Difficulty:

(N/A)

Question Stats:

80% (02:19) correct 20% (00:00) wrong based on 26 sessions

### HideShow timer Statistics

This topic is locked. If you want to discuss this question please re-post it in the respective forum.

1) What is the least number of digits (including repetitions) needed to express 10 to the power 100 in decimal notation?
(A) 4
(B) 100
(C) 101
(D) 1,000
(E) 1,001

Regards,
Senior Manager
Joined: 31 Aug 2009
Posts: 419
Location: Sydney, Australia
Followers: 8

Kudos [?]: 276 [0], given: 20

Re: few good PS qs. [#permalink]

### Show Tags

09 Oct 2009, 05:25
10^2 = 10x10 =100
10^3 = 10x10x10 = 1000

Therefore.. 10^100 = 1 followed by 100 0's.
Answer = 101 = C
Intern
Joined: 04 Oct 2009
Posts: 7
Followers: 0

Kudos [?]: 6 [0], given: 0

Re: few good PS qs. [#permalink]

### Show Tags

09 Oct 2009, 21:39
yangsta8 wrote:
10^2 = 10x10 =100
10^3 = 10x10x10 = 1000

Therefore.. 10^100 = 1 followed by 100 0's.
Answer = 101 = C

Did not understand this answer. Could you explain? Thanks.
Senior Manager
Joined: 31 Aug 2009
Posts: 419
Location: Sydney, Australia
Followers: 8

Kudos [?]: 276 [0], given: 20

Re: few good PS qs. [#permalink]

### Show Tags

10 Oct 2009, 04:58
mohana wrote:
yangsta8 wrote:
10^2 = 10x10 =100
10^3 = 10x10x10 = 1000

Therefore.. 10^100 = 1 followed by 100 0's.
Answer = 101 = C

Did not understand this answer. Could you explain? Thanks.

The question is asking what is 10^100.
As an example if you look at 10^2...the result is 1 with 2 trailing 0's.
10^3 is following the same pattern... 1 with 3 trailing zeros.
10^4 will be 1 with 4 trailing zeros...
Hence 10^100 should be 1 with 100 trailing zeros.
Re: few good PS qs.   [#permalink] 10 Oct 2009, 04:58
Display posts from previous: Sort by

# few good PS qs.

 post reply Question banks Downloads My Bookmarks Reviews Important topics

 Powered by phpBB © phpBB Group and phpBB SEO Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.