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What does 4^(1/2)+ 4^1/3+ 4^1/4= a. less than 3 b. equal to

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Manager
Joined: 21 Mar 2006
Posts: 132
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What does 4^(1/2)+ 4^1/3+ 4^1/4= a. less than 3 b. equal to [#permalink]  20 Aug 2006, 15:16
What does

4^(1/2)+ 4^1/3+ 4^1/4=

a. less than 3
b. equal to 3
c. between 3 and 4
d. equal to 4
e. greater than 4

_________________

A.P.

Senior Manager
Joined: 14 Aug 2006
Posts: 368
Followers: 1

Kudos [?]: 3 [0], given: 0

e

assuming that the square root is positive:

4^1/2 = 2
4^1/3 > 1
4^1/4 = 2^1/2 > 1

..so greater than 4?
CEO
Joined: 20 Nov 2005
Posts: 2922
Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008
Followers: 15

Kudos [?]: 80 [0], given: 0

E

4^(1/2) = 2
4^1/3 > 1
4^1/4 > 1

so 4^(1/2)+ 4^1/3+ 4^1/4 > 2+1+1
_________________

SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

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