If x, y, z are integers greater than 1, what is the value of : DS Archive
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# If x, y, z are integers greater than 1, what is the value of

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If x, y, z are integers greater than 1, what is the value of [#permalink]

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20 Nov 2005, 00:23
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If x, y, z are integers greater than 1, what is the value of x+y+z
1) xyz =70
2) x/yz = 7/10
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20 Nov 2005, 00:38
A.

(1) 2,5,7
x+y+z = 14

(2) ratio is given, can be many combinations:
7 & 5,2
14 & 5,4

insufficient
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20 Nov 2005, 00:47
A for me as well. Since the question does not ask for specific values of x, y, z, (1) is sufficient.
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20 Nov 2005, 09:34
Using (1), we know 70 = 2*5*7. Only one combination since all integers must be greater tha 1. (1) is sufficient.

Using (2), we don't know if x/yz = 7/10 or 70/100 or 700/1000 etc...So (2) is sufficient.

Ans: A
20 Nov 2005, 09:34
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