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The numbers of books read by 7 students last year were 10, 5

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Kudos [?]: 8 [1] , given: 13

The numbers of books read by 7 students last year were 10, 5 [#permalink] New post 11 Jun 2010, 06:44
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A
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Difficulty:

  35% (medium)

Question Stats:

63% (01:46) correct 37% (00:55) wrong based on 74 sessions
The numbers of books read by 7 students last year were 10, 5, p , q , r , 29 and 20. What was the range of the numbers of books read by the 7 students last year?

(1) 5 < p < q
(2) p < r < 15

[Reveal] Spoiler:
How I went ahead 1) Insuff because no info on r
2) Insuff because no info on q

1) & 2) p>5 and p<q and p<r<15 => p=b/w 6 and 13 max value of p =13,min value of p possible = 6
max value of r=14,min value of r=7 Range = Largest-Smallest So 29-5=24.So answer is (C) .Why is this wrong.Please help
[Reveal] Spoiler: OA
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Kudos [?]: 6 [0], given: 3

Re: Need help on Range problem in Data Sufficiency [#permalink] New post 11 Jun 2010, 06:55
What about q? There is only one statement that talks about q which says q>p. That doesn't tell us anything about the maximum possible value of q. What if q>29?
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Kudos [?]: 5 [0], given: 12

Re: Need help on Range problem in Data Sufficiency [#permalink] New post 28 Aug 2013, 06:53
sjayasa wrote:
What about q? There is only one statement that talks about q which says q>p. That doesn't tell us anything about the maximum possible value of q. What if q>29?



OA E ..Q could be greater than 29..
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Kudos [?]: 565 [0], given: 182

Re: The numbers of books read by 7 students last year were 10, 5 [#permalink] New post 05 Sep 2013, 07:08
By combining both statements , we may get range of P & R. But we are not getting any maximum possible value of Q. SO E is the correct option
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Re: The numbers of books read by 7 students last year were 10, 5   [#permalink] 05 Sep 2013, 07:08
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