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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1055
GPA: 3.39
Set S contains 100 consecutive integers. If the range of the negative
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17 Aug 2021, 09:22
17 Aug 2021, 09:22
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Question Stats:
87% (01:54) correct
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Set S contains 100 consecutive integers. If the range of the negative elements of Set S equals 80, what is the average (arithmetic mean) of the positive numbers in the set?
A. 8
B. 8.5
C. 9
D. 9.5
E. 10
A. 8
B. 8.5
C. 9
D. 9.5
E. 10
Re: Set S contains 100 consecutive integers. If the range of the negative
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20 Aug 2021, 15:06
20 Aug 2021, 15:06
1
As the range of negative values in the set is 80, and the highest value among the negatives will be = -1, then lowest value= -81.
Now, there are 100 elements. So the set is = {-81, -80, ..............., -1, 0, 1, 2,3,.......17,18}
We need average of positive elements only, that is = (9+10)/2 = 9.5
Now, there are 100 elements. So the set is = {-81, -80, ..............., -1, 0, 1, 2,3,.......17,18}
We need average of positive elements only, that is = (9+10)/2 = 9.5
gmatclubot
Re: Set S contains 100 consecutive integers. If the range of the negative [#permalink]
20 Aug 2021, 15:06
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