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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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Current Student
Joined: 16 Jul 2015
Posts: 18
Location: India
Schools: Olin '19 (A)
GMAT 1: 740 Q50 V40
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a,b and c are integers greater than 2. what is the value of a+b+c ?  [#permalink]

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25 Aug 2016, 11:22
00:00

Difficulty:

25% (medium)

Question Stats:

69% (00:42) correct 31% (00:38) wrong based on 63 sessions

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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
Manager
Joined: 28 Jun 2016
Posts: 207
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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25 Aug 2016, 15:02
1
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
Senior Manager
Joined: 19 Apr 2016
Posts: 274
Location: India
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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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 .
Re: a,b and c are integers greater than 2. what is the value of a+b+c ? &nbs [#permalink] 15 Feb 2017, 20:25
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