If one of the followings is the product of the two 3-digit : GMAT Problem Solving (PS)
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# If one of the followings is the product of the two 3-digit

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Intern
Joined: 24 Feb 2013
Posts: 16
Location: Argentina
WE: Project Management (Energy and Utilities)
Followers: 2

Kudos [?]: 11 [1] , given: 2

If one of the followings is the product of the two 3-digit [#permalink]

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01 May 2013, 06:03
1
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1
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Difficulty:

15% (low)

Question Stats:

81% (01:54) correct 19% (01:31) wrong based on 104 sessions

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If one of the followings is the product of the two 3-digit integers 8K7 and 6L9 (K and L denote the tens digit of the respective integers), then that product must be

(A) 478,823
(B) 511,913
(C) 531,875
(D) 538,424
(E) 569,114
[Reveal] Spoiler: OA
Intern
Joined: 24 Feb 2013
Posts: 16
Location: Argentina
WE: Project Management (Energy and Utilities)
Followers: 2

Kudos [?]: 11 [4] , given: 2

Re: Number Properties - Product [#permalink]

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01 May 2013, 06:03
4
KUDOS
To know the unit digit you can multiply both digit number: 7 x 9 = 63
This eliminates C, D, and E, because the number must end with a 3

To know the answer you can multiply both the thousand digit giving 8 x 6 = 48 so the number must be bigger than 480.000.
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Joined: 09 Sep 2013
Posts: 13957
Followers: 590

Kudos [?]: 167 [0], given: 0

Re: If one of the followings is the product of the two 3-digit [#permalink]

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13 Aug 2014, 15:40
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Re: If one of the followings is the product of the two 3-digit   [#permalink] 13 Aug 2014, 15:40
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