It is currently 21 Sep 2017, 16:29

### 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

# odd/even question

Author Message
Manager
Joined: 01 May 2008
Posts: 111

Kudos [?]: 7 [0], given: 0

Location: São Paulo

### Show Tags

04 May 2008, 13:51
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

At the GMAC Practice test, the answer of this question is 27, but I don't understand why (I think it is 81).
Can anyony explain why it is 27?
Attachments

Doc1.doc [47.5 KiB]

Kudos [?]: 7 [0], given: 0

VP
Joined: 10 Jun 2007
Posts: 1436

Kudos [?]: 329 [0], given: 0

### Show Tags

04 May 2008, 14:51
ldpedroso wrote:
At the GMAC Practice test, the answer of this question is 27, but I don't understand why (I think it is 81).
Can anyony explain why it is 27?

Even though [9] * [6] = 81, the question is looking for [x] = 81
[27] = 3*27 = 81

Kudos [?]: 329 [0], given: 0

Manager
Joined: 01 May 2008
Posts: 111

Kudos [?]: 7 [0], given: 0

Location: São Paulo

### Show Tags

04 May 2008, 15:14
Sorry, but I didn't understand the explanation

Kudos [?]: 7 [0], given: 0

VP
Joined: 10 Jun 2007
Posts: 1436

Kudos [?]: 329 [0], given: 0

### Show Tags

04 May 2008, 15:21
ldpedroso wrote:
Sorry, but I didn't understand the explanation

Look at the answer choices carefully. They are in form of [X] not X.
You got the 81 part correct because [9]*[6] = 81

But the answer choices is NOT 81 because [81] != 81

[27] = 3*27 = 81

Kudos [?]: 329 [0], given: 0

Manager
Joined: 01 May 2008
Posts: 111

Kudos [?]: 7 [0], given: 0

Location: São Paulo

### Show Tags

04 May 2008, 15:53
Ah! Ok! THANKS
How dumb I am....

Kudos [?]: 7 [0], given: 0

VP
Joined: 10 Jun 2007
Posts: 1436

Kudos [?]: 329 [0], given: 0

### Show Tags

04 May 2008, 17:22
ldpedroso wrote:
Ah! Ok! THANKS
How dumb I am....

I am sure a lot of people would fall for the trap under pressure. Just be careful...

Kudos [?]: 329 [0], given: 0

Re: odd/even question   [#permalink] 04 May 2008, 17:22
Display posts from previous: Sort by