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24 Feb 2013, 12:39
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B
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Difficulty:
35%
(medium)
Question Stats:
61% (00:46) correct
39%
(00:50)
wrong
based on 1903
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List K consists of 12 consecutive integers. If -4 is the least integer in list K, what is the range of the positive integers in list K?
A. 5
B. 6
C. 7
D. 11
E. 12
A. 5
B. 6
C. 7
D. 11
E. 12
26 Feb 2013, 03:07
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chaitanyas
Bunnel , I didn't understand when the largest positive integer in the list is 7 , how did the range become 7-1 = 6 , shouldn't it be 7
Pushpinder
Solution:
Set K = ( -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7)
Range is defined as the highest value of f(x) and the lowest value of f(x). Over here the range will be 7 - (-4) = 11.
Try making a graph of the set K and see what is the difference between the maximum value and the minimum value.
Set K = ( -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7)
Range is defined as the highest value of f(x) and the lowest value of f(x). Over here the range will be 7 - (-4) = 11.
Try making a graph of the set K and see what is the difference between the maximum value and the minimum value.
The set is {-4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7}. The question asks to find the range of the POSITIVE integers in the list.
The range of the POSITIVE integers in the list is {largest} - {smallest} = 7 - 1 = 6.
Hope it's clear.
General Discussion
24 Feb 2013, 12:54
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nave81
List K consists of 12 consecutive integers. If -4 is the least integer in list K, what is the range of the positive integers in list K?
A. 5
B. 6
C. 7
D. 11
E. 12
A. 5
B. 6
C. 7
D. 11
E. 12
Since -4 is the least integer in list K, then 7 is the largest integer in that list. Thus the range of the positive integers in the list is 7-1=6.
Answer: B.
