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Joined: 29 Apr 2003
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15 Apr 2006, 07:00
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a,b,c are integers. What is a?

1. (a-7)(b-7)(c-7)=0
2. bc=18

Kudos [?]: 30 [0], given: 0

Intern
Joined: 04 May 2004
Posts: 47

Kudos [?]: 34 [0], given: 0

Location: India

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15 Apr 2006, 07:29
Quote:
a,b,c are integers. What is a?

1. (a-7)(b-7)(c-7)=0
2. bc=18

Statement 1 tells that either a-7 or b-7 or c-7 is 0. It does not tells us for sure if a-7 is 0 or not.

Statement 2 tells us that b and c both are non zero but it does not tells us what is a. It also tells us that b and c are one of 1,2,3,6,9,18.

Combining the two, we know that b and c are not equal to 7. a-7 has to be 0 and thus a = 7
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Kudos [?]: 34 [0], given: 0

Senior Manager
Joined: 11 Nov 2005
Posts: 325

Kudos [?]: 15 [0], given: 0

Location: London

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15 Apr 2006, 18:40
Agree C.

s4ur4bh wrote:
Quote:
a,b,c are integers. What is a?

1. (a-7)(b-7)(c-7)=0
2. bc=18

Statement 1 tells that either a-7 or b-7 or c-7 is 0. It does not tells us for sure if a-7 is 0 or not.

Statement 2 tells us that b and c both are non zero but it does not tells us what is a. It also tells us that b and c are one of 1,2,3,6,9,18.

Combining the two, we know that b and c are not equal to 7. a-7 has to be 0 and thus a = 7

Kudos [?]: 15 [0], given: 0

15 Apr 2006, 18:40
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