If the sum of the digits of the positive two-digit number x : DS Archive
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# If the sum of the digits of the positive two-digit number x

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If the sum of the digits of the positive two-digit number x [#permalink]

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07 Mar 2009, 14:31
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If the sum of the digits of the positive two-digit number x is 4, what is the value of x?

(1) x is odd.

(2) Twice the value of x is less than 44.

I disagree with OA..
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Joined: 29 Aug 2007
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07 Mar 2009, 14:56
FN wrote:
If the sum of the digits of the positive two-digit number x is 4, what is the value of x?

(1) x is odd.
(2) Twice the value of x is less than 44.

I disagree with OA..

x = ab = 10a+b
a+b = 4

x = either 13 or 22 or 31 or 40.

1: x is odd and could be 13 or 31.

2: 2x < 44.
x < 22.
x is 13. suff..

B.
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Current Student
Joined: 28 Dec 2004
Posts: 3384
Location: New York City
Schools: Wharton'11 HBS'12
Followers: 15

Kudos [?]: 282 [0], given: 2

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07 Mar 2009, 15:10

GMAT TIGER wrote:
FN wrote:
If the sum of the digits of the positive two-digit number x is 4, what is the value of x?

(1) x is odd.
(2) Twice the value of x is less than 44.

I disagree with OA..

x = ab = 10a+b
a+b = 4

x = either 13 or 22 or 31 or 40.

1: x is odd and could be 13 or 31.

2: 2x < 44.
x < 22.
x is 13. suff..

B.
Re: DS...manhattan gmat   [#permalink] 07 Mar 2009, 15:10
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