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What does NOT even integer mean exactly???

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by fatalityish » Wed Sep 29, 2010 12:50 pm
I came across this question in OG-12 for DS.

If m is an integer, is m odd?
(1) m/2 is not an even integer.
(2) m - 3 is an even integer.


then solution is not very difficult but my query is for the first point. It says m/2 is not an even integer. Does that mean m/2 can be a decimal number also??? This is a trick question i believe.

Ishaan
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Source: — Data Sufficiency |
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by ankur.agrawal » Wed Sep 29, 2010 1:11 pm
My point is even if m/2 can be a decimal for instance:

take m=7; m/2=7/2=3.5 which is decimal

& take m= 30; m/2=30/2=15 .

In both cases it is evident that m/2 is not an even integer & m can either be odd or even.

So statement 1 is still not sufficient if if we consider the decimal case.

Am i missing something or is my explaination correct?
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by fatalityish » Wed Sep 29, 2010 1:15 pm
ankur yes i understand what you mean say. with the same logic i came to a conclusion that answer is B but my question was that, if another question says that x/y is not even integer in that case should we consider x/y as decimal as well??? I know its a bit silly thing but i need to be sure.

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by ankur.agrawal » Wed Sep 29, 2010 1:28 pm
fatalityish wrote:ankur yes i understand what you mean say. with the same logic i came to a conclusion that answer is B but my question was that, if another question says that x/y is not even integer in that case should we consider x/y as decimal as well??? I know its a bit silly thing but i need to be sure.

Ishaan
HEY ya u might have a good point here. Lets see if sum expert can give some insight into this.
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by alivapriyada » Thu Sep 30, 2010 3:10 am
fatalityish wrote:ankur yes i understand what you mean say. with the same logic i came to a conclusion that answer is B but my question was that, if another question says that x/y is not even integer in that case should we consider x/y as decimal as well??? I know its a bit silly thing but i need to be sure.

Ishaan
IMO we don't need to consider the decimal as we just have to check whether it is divisible by 2 or not.Still eagerly waiting for expert's reply.
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by diebeatsthegmat » Thu Sep 30, 2010 7:29 pm
alivapriyada wrote:
fatalityish wrote:ankur yes i understand what you mean say. with the same logic i came to a conclusion that answer is B but my question was that, if another question says that x/y is not even integer in that case should we consider x/y as decimal as well??? I know its a bit silly thing but i need to be sure.

Ishaan
IMO we don't need to consider the decimal as we just have to check whether it is divisible by 2 or not.Still eagerly waiting for expert's reply.
i think its neccessary to mention that question because even/even is even and odd/even is not an even or not integer
anyways, B is my answer
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