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a,b and c are integers greater than 2. what is the value of a+b+c ?

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Intern
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Joined: 16 Jul 2015
Posts: 19
Location: India
Schools: Olin '19 (A)
GMAT 1: 740 Q50 V40
GPA: 3.4
a,b and c are integers greater than 2. what is the value of a+b+c ? [#permalink]

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New post 25 Aug 2016, 11:22
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a,b and c are integers greater than 2. what is the value of a+b+c ?

1. bc= 35
2. abc=105
[Reveal] Spoiler: OA
1 KUDOS received
Manager
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Joined: 28 Jun 2016
Posts: 207
Location: Canada
Concentration: Operations, Entrepreneurship
Re: a,b and c are integers greater than 2. what is the value of a+b+c ? [#permalink]

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New post 25 Aug 2016, 15:02
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tagmag wrote:
a,b and c are integers greater than 2. what is the value of a+b+c ?

1. bc= 35
2. abc=105



St 1: By prime factorization : bc=5*7; but no info about a.

Insufficient

St 2: By prime factorization : abc =3*5*7 (since all of them are integers greater than 2)

Therefor a+b+c =15

Sufficient

B
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Joined: 19 Apr 2016
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GMAT 1: 570 Q48 V22
GMAT 2: 640 Q49 V28
GPA: 3.5
WE: Web Development (Computer Software)
Re: a,b and c are integers greater than 2. what is the value of a+b+c ? [#permalink]

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New post 15 Feb 2017, 20:25
tagmag wrote:
a,b and c are integers greater than 2. what is the value of a+b+c ?

1. bc= 35
2. abc=105



St I
bc =35
now 35 = 7*5
so b =5 and c =7 or c = 7 and b = 5
so b+c = 12 but nothing is given about a ----------Insufficient.

St II
abc = 105
now 105 = 3*5*7
so a,b and c can take any of the values i.e. 3,5,7
but their sum will always be 15 ---------Sufficient

Hence Option B is correct.
Hit Kudos if you liked it 8-).
Re: a,b and c are integers greater than 2. what is the value of a+b+c ?   [#permalink] 15 Feb 2017, 20:25
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a,b and c are integers greater than 2. what is the value of a+b+c ?

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