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# LCM

Author Message
Intern
Joined: 17 Apr 2010
Posts: 38

Kudos [?]: 22 [0], given: 25

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22 Apr 2010, 12:58
00:00

Difficulty:

(N/A)

Question Stats:

100% (02:36) correct 0% (00:00) wrong based on 2 sessions

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51. What is the least common multiple of 8, 9, 10, 11, 12 and 24?

How would you approach this? Please explain step by step. Thx.
_________________

Consider giving kudos, if you like my thread!

FYI: Questions are from the workbook of my prep course.

Kudos [?]: 22 [0], given: 25

VP
Joined: 05 Mar 2008
Posts: 1467

Kudos [?]: 307 [1], given: 31

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22 Apr 2010, 13:09
1
KUDOS
gmatt14 wrote:
51. What is the least common multiple of 8, 9, 10, 11, 12 and 24?

How would you approach this? Please explain step by step. Thx.

8 = 2 x 2 x 2
9 = 3 x 3
10 = 5 x 2
11 = 11
12 = 2 x 2 x 3
24 = 2 x 2 x 2 x 3

You take each unique prime. If a unique prime appears more than once you use the one the primes that appear the most. For example, a 2 appears in 8, 10, 12, 24 but appears 3 times (the most)

2x2x2x5x3x3x11 = 3960

Kudos [?]: 307 [1], given: 31

Intern
Joined: 17 Apr 2010
Posts: 38

Kudos [?]: 22 [0], given: 25

### Show Tags

23 Apr 2010, 05:53
How simple is that........you just gotta know how.

I appreciate it.
_________________

Consider giving kudos, if you like my thread!

FYI: Questions are from the workbook of my prep course.

Kudos [?]: 22 [0], given: 25

Re: LCM   [#permalink] 23 Apr 2010, 05:53
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