IS 0 Even??????

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IS 0 Even??????

by taneja.niks » Sat Jul 03, 2010 12:06 pm
I want comments on the GMAT instructors please

Is 0 even??????

As i rememebr my lessons from school 0 is neither Even nor ODD but according to one of the explanations in my princeton book it says 0 is even???

plz clarify.......
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by albatross86 » Sat Jul 03, 2010 12:54 pm
0/2 = 0. The result is an integer, so the number 0 is divisible by 2. As a result, the number 0 is even.

Hope that helps!
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by Testluv » Sat Jul 03, 2010 4:13 pm
taneja.niks wrote:I want comments on the GMAT instructors please

Is 0 even??????

As i rememebr my lessons from school 0 is neither Even nor ODD but according to one of the explanations in my princeton book it says 0 is even???

plz clarify.......
0 is indeed even because it falls between two odd integers on the number line.

0 is:
--even
--neither positive nor negative
--a multiple of all numbers (except for zero)
--not a factor of any numbers (division by zero is undefined)
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by Patrick_GMATFix » Sat Jul 03, 2010 10:01 pm
Testluv wrote:0 is:
--even
--neither positive nor negative
--a multiple of all numbers (except for zero)
--not a factor of any numbers (division by zero is undefined)
I agree with all Deepak said. I had doubts about whether 0 is in fact a multiple of all numbers, because I thought that for this to be true, 0 would have to be the LCM (Least Common Multiple) of any two numbers. Upon further research however, I came to see that once again Deepak is right. So just writing to say thank you :-)

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by Testluv » Mon Jul 05, 2010 9:02 pm
Thanks for the kind words, Patrick! :)

By definition, lowest common multiple refers to the smallest positive multiple of two numbers.

Almost all GMAT questions involving multiples specify positive multiples and 0 is, thus, excluded in almost all GMAT questions involving multiples.

However, it is good to know (perhaps for a sneaky DS question!) that in the (rare) instances in which the question doesn't specify positive multiple, we need to include 0.
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