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

 It is currently 25 Apr 2015, 08:48

### 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

# Is the range of a set of ten different even integers less

Author Message
TAGS:
GMAT Instructor
Joined: 04 Jul 2006
Posts: 1268
Followers: 23

Kudos [?]: 152 [0], given: 0

Is the range of a set of ten different even integers less [#permalink]  25 Jun 2007, 06:15
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
Is the range of a set of ten different even integers less than 20?

(1) The product of the ten integers is negative.
(2) All ten integers have two digits.
Senior Manager
Joined: 04 Jun 2007
Posts: 348
Followers: 1

Kudos [?]: 15 [0], given: 0

Re: DS: range [#permalink]  25 Jun 2007, 06:25
kevincan wrote:
Is the range of a set of ten different even integers less than 20?

(1) The product of the ten integers is negative. INSUFFICIENT
(2) All ten integers have two digits. INSUFFICIENT

Should be C.
Considering the least possible range we get a set of 2-digit even integers from -10 to 26 (or -26 to 10), which is 36. Any other set of values (satisfying both statements 1 and 2) will always give a bigger range.
Director
Joined: 26 Feb 2006
Posts: 905
Followers: 4

Kudos [?]: 52 [0], given: 0

Re: DS: range [#permalink]  25 Jun 2007, 06:54
kevincan wrote:
Is the range of a set of ten different even integers less than 20?

(1) The product of the ten integers is negative.
(2) All ten integers have two digits.

A. there is at least one -ve or +ve even integer but no zero. so the range is at least 20.
Director
Joined: 30 Nov 2006
Posts: 591
Location: Kuwait
Followers: 12

Kudos [?]: 167 [0], given: 0

Is the range of a set of ten different even integers less than 20?

(1) The product of the ten integers is negative.
-------------------------------------------------------
There is an odd number of negative integers in the set. It's either 1,3,5,7 of 9. Let's examine the two extereme cases:

1 negative --> -2, and the largest positive integer is = or > 20
9 negative --> -18 and thus the range is also = or > 20

Taking one trial for a random case:
-10,-8,-6,-4.-2. 2, 4, 6, 8, 10
The range here = 20.

statement 1 is sufficient

(2) All ten integers have two digits.
------------------------------------------
It could be the first digit is 11 and the last digit is 20 OR the last digit can be as large as 99. Different answers to the question for each case.

statement 2 is insufficient

Similar topics Replies Last post
Similar
Topics:
1 If the sum of a set of ten different positive prime numbers 2 23 May 2013, 07:33
8 A set of 25 different integers has a median of 50 and a range of 50. W 7 18 Sep 2011, 19:02
2 There is a set of consecutive even integers 7 28 Mar 2011, 18:35
20 A set of 15 different integers has median of 25 and a range 6 12 Aug 2008, 03:50
Is the range of a set of ten different even integers less 10 09 Oct 2007, 13:49
Display posts from previous: Sort by