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The least common multiple of 22 and 6

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GMAT Club Legend
GMAT Club Legend
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Joined: 07 Jun 2014
Posts: 4721
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 91

Kudos [?]: 1626 [0], given: 389

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The least common multiple of 22 and 6 [#permalink] New post 12 Aug 2018, 15:56
Expert's post
00:00

Question Stats:

64% (00:26) correct 35% (00:23) wrong based on 14 sessions
Quantity A
Quantity B
The least common multiple of 22 and 6
The greatest common factor of 66 and 99


A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

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Sandy
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GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4721
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 91

Kudos [?]: 1626 [0], given: 389

CAT Tests
Re: The least common multiple of 22 and 6 [#permalink] New post 15 Aug 2018, 05:10
Expert's post
Explanation

The least common multiple of 22 and 6 is 66. One way to find the least common multiple is to list the larger number’s multiples (it is more efficient to begin with the larger number) until reaching a multiple that the other number goes into. The multiples of 22 are 22, 44, 66, 88, etc. The smallest of these that 6 goes into is 66.


The greatest common factor of 66 and 99 is 33. One way to find the greatest common factor is to list all the factors of one of the numbers, and then pick the greatest one that also goes into the other number. For instance, the factors of 66 are 1 & 66, 2 & 33, 3 & 22, and 6 & 11. The greatest of these that also goes into 99 is 33.

Thus, Quantity A is greater.
_________________

Sandy
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Re: The least common multiple of 22 and 6   [#permalink] 15 Aug 2018, 05:10
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The least common multiple of 22 and 6

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