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Three radicals of Four - GMATPrep


 
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AleksandrM
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PostPosted: Sun Jul 06, 2008 4:38 pm    Post subject: Three radicals of Four - GMATPrep Reply with quote


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Ian Stewart
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PostPosted: Mon Jul 07, 2008 5:44 am    Post subject: Reply with quote

If the answer choices were different, this would be more difficult, but as is, we know:

sqrt(4) = 2
cube root(4) > 1
fourth root(4) > 1

so the sum is greater than 4. E.

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