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Jameschan168
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 Posted: Thu Aug 30, 2007 7:22 pm Post subject: Problem Set 11 Q 24 |
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Hi all,
Please let me know if there's a logic error in my analysis
If b is the product of three consecutive positive integers C, C+1, C+2, is b a multiple of 24?
(1) b is a multiple of 3
(2) c is odd
First of all, if b is a multiple of 24, b must have factors of 3, 2, 2 and 2
Stmt 1 should be in sufficient since we don't know whether b is also a multiple of 8, and also we already know that b is a multiple of 3 since b is a product of 3 consecutive integers.
Stmt 2 is insuff because we C could be anything. For example,
C = 25, so b is 25 * 26 * 27, and b is not a multiple of 24.
1+2 still insuff based on the example above in stmt 2.
Please let me know if there is an error in the answer choice, which is A. |
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gabriel
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Location: India
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| Posted: Fri Aug 31, 2007 1:42 am Post subject: Re: Problem Set 11 Q 24 |
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| Jameschan168 wrote: | Hi all,
Please let me know if there's a logic error in my analysis
If b is the product of three consecutive positive integers C, C+1, C+2, is b a multiple of 24?
(1) b is a multiple of 3
(2) c is odd
First of all, if b is a multiple of 24, b must have factors of 3, 2, 2 and 2
Stmt 1 should be in sufficient since we don't know whether b is also a multiple of 8, and also we already know that b is a multiple of 3 since b is a product of 3 consecutive integers.
Stmt 2 is insuff because we C could be anything. For example,
C = 25, so b is 25 * 26 * 27, and b is not a multiple of 24.
1+2 still insuff based on the example above in stmt 2.
Please let me know if there is an error in the answer choice, which is A. |
Nothing wrong with your logic answer should be E .. something definitely wrong with the source of these questions  .. i remember there was something wrong with the last question you posted too .. |
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| Posted: Fri Aug 31, 2007 8:42 am Post subject: Re: Problem Set 11 Q 24 |
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Thanks Gabriel.
| gabriel wrote: | | Jameschan168 wrote: | Hi all,
Please let me know if there's a logic error in my analysis
If b is the product of three consecutive positive integers C, C+1, C+2, is b a multiple of 24?
(1) b is a multiple of 3
(2) c is odd
First of all, if b is a multiple of 24, b must have factors of 3, 2, 2 and 2
Stmt 1 should be in sufficient since we don't know whether b is also a multiple of 8, and also we already know that b is a multiple of 3 since b is a product of 3 consecutive integers.
Stmt 2 is insuff because we C could be anything. For example,
C = 25, so b is 25 * 26 * 27, and b is not a multiple of 24.
1+2 still insuff based on the example above in stmt 2.
Please let me know if there is an error in the answer choice, which is A. |
Nothing wrong with your logic answer should be E .. something definitely wrong with the source of these questions .. i remember there was something wrong with the last question you posted too .. |
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