Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 04 Jul 2015, 06:42

### 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

# There is a row of integers:

Author Message
TAGS:
SVP
Joined: 03 Feb 2003
Posts: 1607
Followers: 7

Kudos [?]: 84 [0], given: 0

There is a row of integers:  [#permalink]  18 Jun 2003, 23:18
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
There is a row of integers:
10—12—15—20—X—46—79

find the missing member X.

(A) 32
(B) 31
(C) 30
(D) 29
(E) 28
SVP
Joined: 03 Feb 2003
Posts: 1607
Followers: 7

Kudos [?]: 84 [0], given: 0

this question is still hanging unanswered
Senior Manager
Joined: 26 Jan 2004
Posts: 402
Location: India
Followers: 1

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

Got it. (D) it is.

10 12 15 20 29 46 79 144
diff: 2 3 5 9 17 33 65
diff: 1 2 4 8 16 (for next element)32

SVP
Joined: 03 Feb 2003
Posts: 1607
Followers: 7

Kudos [?]: 84 [0], given: 0

Yes, the answer lies on the second level of differences.
Similar topics Replies Last post
Similar
Topics:
4 A table of numbers has n rows and n columns, where n is an odd integer 4 18 Nov 2014, 07:31
1 Of the books standing in a row on a shelf, an atlas is the 2 14 Jan 2012, 07:47
Sits and Row 3 17 Jun 2009, 05:25
A gardner sets 180 plants in row. Each row contains the same 4 22 Aug 2006, 21:40
In a certain sculpture, coils of wire are arranged in rows. 3 17 Sep 2005, 23:45
Display posts from previous: Sort by