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M21-25

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Math Expert
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V
Joined: 02 Sep 2009
Posts: 50572
M21-25  [#permalink]

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New post 16 Sep 2014, 00:11
2
4
00:00
A
B
C
D
E

Difficulty:

  45% (medium)

Question Stats:

55% (00:42) correct 45% (00:28) wrong based on 136 sessions

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Math Expert
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Posts: 50572
Re M21-25  [#permalink]

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New post 16 Sep 2014, 00:11
Senior Manager
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S
Joined: 08 Jun 2015
Posts: 435
Location: India
GMAT 1: 640 Q48 V29
GMAT 2: 700 Q48 V38
GPA: 3.33
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Re: M21-25  [#permalink]

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New post 07 Dec 2017, 08:00
+1 for C. Use (a+b)(a+b) = a*a + b*b + 2*a*b. Solve and get the answer as C.
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Re: M21-25 &nbs [#permalink] 07 Dec 2017, 08:00
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M21-25

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