In a stack of boards at a lumber yard, the 20th board counting from th : GMAT Problem Solving (PS)
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# In a stack of boards at a lumber yard, the 20th board counting from th

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Director
Status: No dream is too large, no dreamer is too small
Joined: 14 Jul 2010
Posts: 651
Followers: 43

Kudos [?]: 893 [0], given: 39

In a stack of boards at a lumber yard, the 20th board counting from th [#permalink]

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17 Jun 2011, 04:09
00:00

Difficulty:

35% (medium)

Question Stats:

63% (01:33) correct 38% (00:22) wrong based on 16 sessions

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In a stack of boards at a lumber yard, the 20th board counting from the top of the stack is immediately below the 16th board counting from the bottom of the stack. how many boards are in the stack?

A) 38

B) 36

C) 35

D) 34

E) 32
[Reveal] Spoiler: OA

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Manager
Joined: 19 Nov 2010
Posts: 91
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Kudos [?]: 161 [1] , given: 9

Re: In a stack of boards at a lumber yard, the 20th board counting from th [#permalink]

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17 Jun 2011, 12:08
1
This post received
KUDOS
1 2 3 ... 14 15 16 ...................
..............20 19 ................. 1

So the number of boards = 20+14 =34
Re: In a stack of boards at a lumber yard, the 20th board counting from th   [#permalink] 17 Jun 2011, 12:08
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# In a stack of boards at a lumber yard, the 20th board counting from th

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