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The least positive integer that is divisible by 2, 3, 15, and 28 is

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V
Joined: 02 Sep 2009
Posts: 51229
The least positive integer that is divisible by 2, 3, 15, and 28 is  [#permalink]

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New post 26 Nov 2018, 22:35
00:00
A
B
C
D
E

Difficulty:

  35% (medium)

Question Stats:

62% (00:44) correct 38% (01:14) wrong based on 29 sessions

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Joined: 18 Aug 2017
Posts: 747
Location: India
Concentration: Sustainability, Marketing
WE: Marketing (Energy and Utilities)
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Re: The least positive integer that is divisible by 2, 3, 15, and 28 is  [#permalink]

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New post 27 Nov 2018, 07:30
1
Bunuel wrote:
The least positive integer that is divisible by 2, 3, 15, and 28 is

A. 210
B. 420
C. 840
D. 1,260
E. 2,520


Find LCM of 2,3,15,28 : 2^2*3*5*7= 420 IMO B
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Re: The least positive integer that is divisible by 2, 3, 15, and 28 is  [#permalink]

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New post 27 Nov 2018, 07:39
Bunuel wrote:
The least positive integer that is divisible by 2, 3, 15, and 28 is

A. 210
B. 420
C. 840
D. 1,260
E. 2,520


through prime factorization one can find the least positive integer that is divisible \(2^2\), \(3\),\(5\) ,\(7\) we

we need to have TWO "2" because 28 has at least TWO prime numbers of 2

B :)
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Re: The least positive integer that is divisible by 2, 3, 15, and 28 is &nbs [#permalink] 27 Nov 2018, 07:39
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The least positive integer that is divisible by 2, 3, 15, and 28 is

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