x and y are integers. Is x^7<6^y? (1) x^3=125 (2) y^2=36 : DS Archive
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# x and y are integers. Is x^7<6^y? (1) x^3=125 (2) y^2=36

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x and y are integers. Is x^7<6^y? (1) x^3=125 (2) y^2=36 [#permalink]

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19 Jul 2003, 23:54
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x and y are integers. Is x^7<6^y?

(1) x^3=–125
(2) y^2=36
SVP
Joined: 03 Feb 2003
Posts: 1603
Followers: 8

Kudos [?]: 245 [0], given: 0

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20 Jul 2003, 08:59
bravo guys! A is correct but why?
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Joined: 17 Jul 2003
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20 Jul 2003, 09:14
x and y are integers. Is x^7<6^y?

(1) x^3=тАУ125
(2) y^2=36

statement (1): x is negative and therefore x^7 is negative. 6^y is positive. therefore statement (1) answers the question (yes).

statement (2): y could be positive or negative, and we do not know x so question can't be answered.
20 Jul 2003, 09:14
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