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What is the highest common factor of positive integers u and

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Manager
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What is the highest common factor of positive integers u and [#permalink] New post 06 Apr 2004, 18:59
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What is the highest common factor of positive integers u and v?

A)u and v are consecutive integers.
B)v is a prime number.
Senior Manager
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 [#permalink] New post 08 Apr 2004, 09:37
Yeah, A it is.

1 is the common factor between any two positive integers.
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 [#permalink] New post 08 Apr 2004, 09:46
Yes, A.

I almost chose D until I realized my mistaken reasoning. I'm not good with number theory questions.
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 [#permalink] New post 22 May 2004, 05:09
any other members want to explain?
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 [#permalink] New post 22 May 2004, 15:52
A)u and v are consecutive integers.
GCD of any two consecutive integers is always 1
(Sufficient)

B)v is a prime number.
if v = 7 and u = 14 then GCD = 7
if v = 11 and u = 22 then GCD = 11
(Insufficient)
  [#permalink] 22 May 2004, 15:52
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