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virgo_rookie
 
 

Range of Positive Integers

by virgo_rookie Mon Aug 11, 2008 11:04 pm

List K consists of 12 consecutive integers. If -4 is the least integer in the list K, what is the range of the positive integers in list K.
A.3
B.6
C.7
D.11
E.5.5

Kindly suggest...
Guest
 
 

Re: Range of Positive Integers

by Guest Wed Aug 13, 2008 12:30 pm

virgo_rookie Wrote:List K consists of 12 consecutive integers. If -4 is the least integer in the list K, what is the range of the positive integers in list K.
A.3
B.6
C.7
D.11
E.5.5

Kindly suggest...


My answer will be D, 11
-4 is the least integer in the list K, and K consists of 12 consecutive integers. Range=Large- small integer, range=7-(-4)=11
(-4,-3,-2,-1,0,1,2,3,4,5,6,7)--->12 consecutive integers that list in K. :)
Sumit
 
 

by Sumit Wed Aug 13, 2008 9:18 pm

the answer should be 7 as the Q. asks only for the range of +ve integers
guest
 
 

by guest Sat Aug 16, 2008 10:51 am

ans should be 6 since 0 is neither positive nor negative.
guest612
 
 

errors

by guest612 Sat Aug 23, 2008 7:30 pm

Answer choice E is 12 (not 5.5).

Official Answer is B, 6.

Thanks for your explanations.
RonPurewal
Students
 
Posts: 19744
Joined: Tue Aug 14, 2007 8:23 am
 

by RonPurewal Wed Aug 27, 2008 6:43 am

guest Wrote:ans should be 6 since 0 is neither positive nor negative.


this is correct.

the positive integers in the list are 1, 2, 3, 4, 5, 6, and 7, so the range is biggest - smallest = 7 - 1 = 6.

--

lesson one:
READ PROBLEMS CAREFULLY.
don't miss words like 'positive'. this is not a hard problem, but it's easy to miss if you are inattentive.

lesson two:
KNOW YOUR TERMINOLOGY / CLASSIFICATIONS.
zero is not a positive number.
hiaviavi
Course Students
 
Posts: 2
Joined: Thu Mar 15, 2012 4:28 pm
 

Re: Range of Positive Integers

by hiaviavi Mon May 28, 2012 1:43 pm

This is a very old post- but I hope new questions asked on old posts surface up on the forum.

Ron, why shouldn't we include both 1 & 7 when asked for range ? I mean we have a choice of 7 +ve numbers to choose here - so isn't the range = 7.
RonPurewal
Students
 
Posts: 19744
Joined: Tue Aug 14, 2007 8:23 am
 

Re: Range of Positive Integers

by RonPurewal Thu May 31, 2012 7:20 am

hiaviavi Wrote:This is a very old post- but I hope new questions asked on old posts surface up on the forum.

Ron, why shouldn't we include both 1 & 7 when asked for range ? I mean we have a choice of 7 +ve numbers to choose here - so isn't the range = 7.


"range" is defined as the difference between the smallest and largest values. since those are 1 and 7, respectively, the range is 6.
it does not matter how many numbers are in the list.