It is currently 20 Nov 2017, 23:34

### 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

# A three-digit code for certain logs uses the digits 0, 1, 2,

Author Message
Director
Joined: 06 Jan 2008
Posts: 545

Kudos [?]: 565 [0], given: 2

A three-digit code for certain logs uses the digits 0, 1, 2, [#permalink]

### Show Tags

28 Apr 2008, 13:26
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 1 sessions

### HideShow timer Statistics

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

A three-digit code for certain logs uses the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 according to the
following constraints. The first digit cannot be 0 or 1, the second digit must be 0 or 1, and the
second and third digits cannot both be 0 in the same code. How many different codes are
possible?
A. 144
B. 152
C. 160
D. 168
E. 176

Kudos [?]: 565 [0], given: 2

Senior Manager
Joined: 19 Apr 2008
Posts: 313

Kudos [?]: 99 [0], given: 0

### Show Tags

28 Apr 2008, 14:30
saravalli wrote:
A three-digit code for certain logs uses the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 according to the
following constraints. The first digit cannot be 0 or 1, the second digit must be 0 or 1, and the
second and third digits cannot both be 0 in the same code. How many different codes are
possible?
A. 144
B. 152
C. 160
D. 168
E. 176

8*1*9 +8*1*10

Kudos [?]: 99 [0], given: 0

Director
Joined: 06 Jan 2008
Posts: 545

Kudos [?]: 565 [0], given: 2

### Show Tags

28 Apr 2008, 17:14
oops i over looked the third condition and got 160.
agree B.
OA B. Thanks

Kudos [?]: 565 [0], given: 2

Re: DS - code   [#permalink] 28 Apr 2008, 17:14
Display posts from previous: Sort by