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OG edition 11 PS Q:236 - consecutive nos

Expert replies
by rainbownlife » Tue Feb 12, 2008 3:23 pm
Questio is of the type:
If a,b,c are 3 consecutive nos and a,b,c are +ve and a < b < c then blah blah blah....

OG says the following in explanation to this question:
If 3 numbers a,b,c are +ve and a < b < c
then we can conclude that b = a + 1 and c = a + 2

My question why?

We can have something like
2,4,6
these are three consecutive even (+ ve) nos and 2 < 4 < 6
however 4 is not 2 + 1
and 6 is not 2 + 2

am i missing something ? i thought consecutive nos need not always be of the form 2,3,4,5...
we can have consecutive even nos,consecutive prime nos, consecutive odd nos etc...
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Source: — Problem Solving |

mm

by meghamehta15 » Tue Feb 12, 2008 7:30 pm
aren't consecutive nos. supposed to mean necessarily, nos. that come one after the other? 1,2,3...
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by smar83 » Tue Feb 12, 2008 8:44 pm
If the question states " consecutive integers" it necessarily means the no. which follow each other ( eg: 1,2,3,4,6....)
For GMAT, if they want us to consider consecutive even or odd integers, they would state that in the question, if they don't we assume it as just consecutive integers...
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by rainbownlife » Wed Feb 13, 2008 10:43 am
hmmm i guess we use nos one after the other for consecutive nos unless specified otherwise.
thanks Sid !
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