It is currently 21 Oct 2017, 11:13

### 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

# If D is a positive number and F is the product of the first

Author Message
Senior Manager
Joined: 22 Sep 2005
Posts: 278

Kudos [?]: 241 [0], given: 1

If D is a positive number and F is the product of the first [#permalink]

### Show Tags

25 Jan 2008, 11:41
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

### HideShow timer Statistics

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

If D is a positive number and F is the product of the first 30 positive integers, what is the value of D?

1) 10^D is a factor of F
2) D>6

Kudos [?]: 241 [0], given: 1

CEO
Joined: 17 Nov 2007
Posts: 3584

Kudos [?]: 4588 [0], given: 360

Concentration: Entrepreneurship, Other
Schools: Chicago (Booth) - Class of 2011
GMAT 1: 750 Q50 V40
Re: DS: Value of D [#permalink]

### Show Tags

25 Jan 2008, 14:25
C

1. 10^1 and 100^2 are factors of F. insuff.

2. insuff.

1&2. 10^D=2^D*5^D.
How many "5" we have in F.
30 (1), 25 (2), 20 (1), 15 (1), 10 (1),5 (1)
we have 7 "5". Therefore, D<8.

from 2. 6<D<8 ==> D=7
_________________

HOT! GMAT TOOLKIT 2 (iOS) / GMAT TOOLKIT (Android) - The OFFICIAL GMAT CLUB PREP APP, a must-have app especially if you aim at 700+ | PrepGame

Kudos [?]: 4588 [0], given: 360

Re: DS: Value of D   [#permalink] 25 Jan 2008, 14:25
Display posts from previous: Sort by