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Is a 3 digit number divisible by 6? 1) The sum of tens and

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Is a 3 digit number divisible by 6? 1) The sum of tens and [#permalink] New post 27 Apr 2006, 23:39
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100% (02:38) correct 0% (00:00) wrong based on 0 sessions
Is a 3 digit number divisible by 6?

1) The sum of tens and hundreds' digit is 6.

2) Unit digit is 6.
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Re: DS 3 digit number [#permalink] New post 28 Apr 2006, 00:18
getzgetzu wrote:
Is a 3 digit number divisible by 6?

1) The sum of tens and hundreds' digit is 6.

2) Unit digit is 6.


to be divisible by 6 must be divisible by 3 and to be even

from (1)

insuff. not info about unit so no idea if is even or if the addition of the 3 digits is a multiple of 3

from (2) not enough either, the 3 digit numbre might not be divisible by 3

together

yes is sufficient

so I'll go with C
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 [#permalink] New post 28 Apr 2006, 00:29
Agree it's C

1. Insufficient, tens and hundreds place can be anything, 5,1; 1,5; 3,3; 4,2...

2. Insufficient.

Combining 1 and 2, the sum of ones, tens and hundreds will always be a number which is divisible by 2 and 3 ==> thus by 6.
  [#permalink] 28 Apr 2006, 00:29
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Is a 3 digit number divisible by 6? 1) The sum of tens and

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