What is the cube root of w ? : DS Archive
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# What is the cube root of w ?

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Manager
Joined: 11 Jan 2007
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What is the cube root of w ? [#permalink]

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09 Jun 2007, 19:37
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Q12:
What is the cube root of w ?
(1) The 5th root of w is 64.
(2) The 15th root of w is 4.
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09 Jun 2007, 19:56
B is sufficient.

w ^ 1/15 = 4
w ^ 5/15 = 4 ^ 5

There might be a way to solve it via just A as well , however I didnt see an easy way so I left it at that.
09 Jun 2007, 19:56
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