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# When we're asked to count the # of factors of a certain

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Director
Joined: 12 Jun 2006
Posts: 532

Kudos [?]: 162 [0], given: 1

When we're asked to count the # of factors of a certain [#permalink]

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08 Apr 2007, 07:34
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

When we're asked to count the # of factors of a certain number do we include 1 and the # itself? (ie 9 has 4 factors 3,3,1 and 9)

Kudos [?]: 162 [0], given: 1

Director
Joined: 30 Nov 2006
Posts: 591

Kudos [?]: 314 [0], given: 0

Location: Kuwait

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08 Apr 2007, 08:13
yes we do.

And for the integer 9, the factors are : 1, 3, 9
The integer 9 has Three factors.

Kudos [?]: 314 [0], given: 0

Director
Joined: 12 Jun 2006
Posts: 532

Kudos [?]: 162 [0], given: 1

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08 Apr 2007, 09:38
ok. thanks. VERY careless error on my part

Kudos [?]: 162 [0], given: 1

Manager
Joined: 28 Feb 2007
Posts: 196

Kudos [?]: 11 [0], given: 0

Location: California

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08 Apr 2007, 11:29
ggarr wrote:
When we're asked to count the # of factors of a certain number do we include 1 and the # itself? (ie 9 has 4 factors 3,3,1 and 9)

Factor by definition is any number that divides the original. Since 1 and the number divide itself so they are factors.

Kudos [?]: 11 [0], given: 0

Re: Simple factoring question   [#permalink] 08 Apr 2007, 11:29
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