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How many different prime factors does the number 630 have

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Senior Manager
Senior Manager
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Joined: 10 Dec 2004
Posts: 274
Followers: 1

Kudos [?]: 28 [0], given: 0

How many different prime factors does the number 630 have [#permalink] New post 24 Jan 2005, 13:04
How many different prime factors does the number 630 have
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"Forums are meant to benefit all. No one is interested in knowing what your guesses are. Please explain the reasoning behind the answer you chose. This will also help you organize your thoughts quickly during the exam."

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Joined: 28 Dec 2004
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Location: New York City
Schools: Wharton'11 HBS'12
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Kudos [?]: 164 [0], given: 2

 [#permalink] New post 24 Jan 2005, 13:36
4. distinct prime factors, in all 5! 2,3,3,5,7

3, 5, 7, 2 are the distinct factors..
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Joined: 19 Nov 2004
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 [#permalink] New post 24 Jan 2005, 15:51
3x3x7x5x2

Distinct Prime factors 3,7,5,2 = 4
  [#permalink] 24 Jan 2005, 15:51
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How many different prime factors does the number 630 have

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