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What is the value of the two-digit number XY, where X

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Manager
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Joined: 27 Jul 2003
Posts: 124
Location: Singapore
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Kudos [?]: 5 [2] , given: 0

What is the value of the two-digit number XY, where X [#permalink] New post 14 Oct 2003, 22:46
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A
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E

Difficulty:

  35% (medium)

Question Stats:

58% (01:49) correct 42% (00:44) wrong based on 129 sessions
What is the value of the two-digit number XY, where X represents the tens digit and Y represents the units digit?

(1) The product of the digits is 12.

(2) The sum of the digits is 8.
[Reveal] Spoiler: OA
CEO
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Joined: 15 Aug 2003
Posts: 3470
Followers: 60

Kudos [?]: 674 [0], given: 781

 [#permalink] New post 14 Oct 2003, 23:07
stolyar wrote:
E.


agree.

A.
X = 6 , Y= 2

X=2 , Y = 6

B
clearly insufficient

combined, no good.
Intern
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Joined: 28 Mar 2013
Posts: 4
Concentration: Operations, General Management
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Re: What is the value of the two-digit number XY, where X [#permalink] New post 15 May 2013, 07:25
A. yields 4 answers. 2x6, 3x4, 4x3, 6x2 so Insuficient.

B. yields 2 answers 2+6, 6+2 so Insufficient.

Together also they are insufficient. so E is the answer.
Manager
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Re: What is the value of the two-digit number XY, where X [#permalink] New post 24 Nov 2013, 16:44
1)
x = 4, y =3
x = 3, y =4
NS

2)
x = 2, y =6
x = 4, y = 4
NS

1+2)
x*y = 12
x + y= 8
xy+y^2 = 8y
y^2-8y+12 = 0
(y-2)*(y-6) = 0

NS

E
Re: What is the value of the two-digit number XY, where X   [#permalink] 24 Nov 2013, 16:44
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