Are all of the numbers in a certain list of 15 numbers : DS Archive
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# Are all of the numbers in a certain list of 15 numbers

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Are all of the numbers in a certain list of 15 numbers [#permalink]

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01 Jun 2005, 18:10
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Are all of the numbers in a certain list of 15 numbers equal?

(1) The sum of all the numbers in the list is 60.

(2) The sum of any 3 numbers in the list is 12.
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02 Jun 2005, 07:31
Folaa3 wrote:
Are all of the numbers in a certain list of 15 numbers equal?

(1) The sum of all the numbers in the list is 60.

(2) The sum of any 3 numbers in the list is 12.

B.

1) Insufficient = as each can be 3 , and the last one can be 18 OR all can be equal to 4.

2) Sufficient = as for any sum of any three to be qual to 12, each HAS to be equal to 4.

Hence B.

HMTG.
Re: DS-Numbers   [#permalink] 02 Jun 2005, 07:31
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