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# If n is positive, which of the following is equal to

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Manager
Joined: 17 Aug 2006
Posts: 87
Followers: 1

Kudos [?]: 4 [0], given: 0

If n is positive, which of the following is equal to [#permalink]  29 Jul 2007, 10:15
If n is positive, which of the following is equal to 1/((n+1^1/2 - n^1/2)?

A. 1
B. (2n+1)^1/2
C. (n+1)^1/2/(n^1/2)
D. (n+1)^1/2 - (n)^1/2
E. (n+1)^1/2 + (n)^1/2
Senior Manager
Joined: 28 Feb 2007
Posts: 306
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Kudos [?]: 32 [0], given: 0

E.
Discussed earlier. E is reciprocal # to given one.
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