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The Quest for 700: Weekly GMAT Challenge

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Manager
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Joined: 16 Feb 2010
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The Quest for 700: Weekly GMAT Challenge [#permalink] New post 29 Aug 2010, 04:37
00:00
A
B
C
D
E

Difficulty:

  65% (hard)

Question Stats:

57% (02:15) correct 43% (01:24) wrong based on 83 sessions
O(x) represents the least odd integer greater than x, whereas o(x) represents the greatest odd integer less than x.

Likewise, E(x) represents the least even integer greater than x, whereas e(x) represents the greatest even integer less than x.

According to these definitions, the value of O(3.2) + E(–1.7) + o(–1.3) + e(2.7) is

(A) 2

(B) 3

(C) 4

(D) 5

(E) 6
[Reveal] Spoiler: OA
Manager
Manager
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Joined: 16 Feb 2010
Posts: 225
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Kudos [?]: 77 [0], given: 16

Re: The Quest for 700: Weekly GMAT Challenge [#permalink] New post 29 Aug 2010, 04:39
[Reveal] Spoiler:
O(3.2) = 5 (notice that we must round up pretty far)

E(–1.7) = 0 (remember that the 0 is larger than –1.7)

o(–1.3) = –3 (we have to round down pretty far, and –3 is less than –1.3)

e(2.7) = 2

5 + 0 + (–3) + 2 = 4
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Re: The Quest for 700: Weekly GMAT Challenge [#permalink] New post 29 Aug 2010, 08:19
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O(3.2) = 5 least odd integer greater than 3.2
E(–1.7) = 0 the least even integer greater than -1.7 ; in GMAT 0 is even
o(–1.3) = -3 greatest odd integer less than -1.3
e(2.7) = 2 greatest even integer less than 2.7

adding = 5+0-3+2 = 4

Answer C
Manager
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Joined: 16 Feb 2010
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Re: The Quest for 700: Weekly GMAT Challenge [#permalink] New post 29 Aug 2010, 09:24
soumang, did you find the question easy? even though MBAmission describes it as 700+ question, I believe it s a sub700 level question....
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Re: The Quest for 700: Weekly GMAT Challenge [#permalink] New post 29 Aug 2010, 09:34
Confusing like hell :shock: :lol:
I wont like to see this kind of problem during last 10 mins of the quants section. Very easy to make mistakes if u r in a hurry.
Level may be 700 but definitely not over 720; since most of the 700+ questions tests multiple concepts and are quite complex. This one meets both criteria but is not so complex.
Re: The Quest for 700: Weekly GMAT Challenge   [#permalink] 29 Aug 2010, 09:34
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