Check GMAT Club Decision Tracker for the Latest School Decision Releases https://gmatclub.com/AppTrack

 It is currently 27 May 2017, 10:01

### 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

# OG PS - 184

Author Message
Senior Manager
Joined: 25 Nov 2006
Posts: 333
Schools: St Gallen, Cambridge, HEC Montreal
Followers: 3

Kudos [?]: 66 [0], given: 0

### Show Tags

19 Jun 2007, 11:01
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.

Hello there,

OG PS 184 is

If the two-digit integers M and N are positive and have the same digits, but in reverse order, which of the following CANNOT be the sum of M and N?

A - 181
B - 165
C - 121
D - 99
E - 44

Senior Manager
Joined: 03 Jun 2007
Posts: 379
Followers: 3

Kudos [?]: 14 [0], given: 0

### Show Tags

19 Jun 2007, 11:59
It is actually a simple question. Answer is A

Let the numbers be 10x + y and 10y + x
So their sum is 11(x+y)
only 181 is not a multiple of 11
VP
Joined: 08 Jun 2005
Posts: 1145
Followers: 7

Kudos [?]: 213 [0], given: 0

### Show Tags

19 Jun 2007, 12:24
lumone wrote:
dahcrap wrote:
It is actually a simple question. Answer is A

Let the numbers be 10x + y and 10y + x
So their sum is 11(x+y)
only 181 is not a multiple of 11

How did you come to 10x + y and 10y + x?

in every two digit number (i.e xy) the first digit (i.e x) equal to x*10 and the second digit equal to y*1

81 = 8*10+1*1
55 = 5*10+5*1
6545 = 6*1000+5*100+4*10+5*1

Senior Manager
Joined: 21 Jun 2006
Posts: 284
Followers: 1

Kudos [?]: 124 [0], given: 0

### Show Tags

20 Jun 2007, 13:44
A
All other nos can be split up into two nos with both digits being equal
20 Jun 2007, 13:44
Display posts from previous: Sort by