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What is the hundreds digit of the smallest four digit number

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Manager
Joined: 02 Aug 2007
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What is the hundreds digit of the smallest four digit number [#permalink]  02 Nov 2007, 15:41
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What is the hundreds digit of the smallest four digit number in which the product of its digits is 350?

A. 2
B. 4
C. 5
D. 8
E. 9
VP
Joined: 28 Mar 2006
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Re: PS - Hundreds Digits [#permalink]  02 Nov 2007, 15:49
yuefei wrote:
What is the hundreds digit of the smallest four digit number in which the product of its digits is 350?

A. 2
B. 4
C. 5
D. 8
E. 9

Is it 2?

find factors for 350 2*5*5*7 so the smallest is 2
Director
Joined: 11 Jun 2007
Posts: 932
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Re: PS - Hundreds Digits [#permalink]  02 Nov 2007, 15:51
yuefei wrote:
What is the hundreds digit of the smallest four digit number in which the product of its digits is 350?

A. 2
B. 4
C. 5
D. 8
E. 9

it should be C 5

using prime factorization:
350 = 2*5*5*7

the smallest those four could be arranged is 2,557
and the hundreds digit is 5
Re: PS - Hundreds Digits   [#permalink] 02 Nov 2007, 15:51
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