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Descending consecutive integers

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Descending consecutive integers [#permalink] New post 26 Oct 2012, 20:25
I have a conceptual question. Whenever the GMAC mentions consecutive integers, does the sequence necessarily have to be ascending? If not, do some properties change if one chooses the integers in a descending order?
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Re: Descending consecutive integers [#permalink] New post 26 Oct 2012, 21:49
closed271 wrote:
I have a conceptual question. Whenever the GMAC mentions consecutive integers, does the sequence necessarily have to be ascending? If not, do some properties change if one chooses the integers in a descending order?

consecutive numbers are always taken in ascending order. eg. n-1 , n , n+1 would be taken as consecutive integers.
Also, yes; 'some' properties would change if u choose the integers in decending order.
for example: For a set of 3 conecutive integers A,B and C.
C-A = 2
but
A-C <> 2
It may be disastourous while arriving at an answer.

On the other hand
B= (A+C)/2
and also
B= (C+A)/2

Therefore, you would always want to choose consecutive numbers in ascending order on GMAT.

Hope it helps.
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Re: Descending consecutive integers [#permalink] New post 06 Nov 2012, 13:02
Expert's post
Yes consecutive integers can be positive or negative.

1,2,3


or -3, -2, -1

And they are taken in ascending order. Consecutive integers beginning from -5 would be -5, -4, -3, etc...
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Re: Descending consecutive integers   [#permalink] 06 Nov 2012, 13:02
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