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joshi.komal
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 Posted: Fri Jan 18, 2008 3:06 pm Post subject: Need the explaination for this DS Question |
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Quant review: Q 82.
If m and n are consecutive positive integers, is m greater than?
1. m-1 and n+1 are consecutive positive integers
2. m is an even number.
I am able to rephrase the Question as
Is m-n = 1 ?
Or Is m= n+1?
But I am unable to solve the the first statement.
Please Help
Thanks
Komal |
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simplyjat
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| Posted: Fri Jan 18, 2008 8:33 pm Post subject: |
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m,n are consecutive numbers => m = n-1 or m = n+1
m-1, n+1 are consecutive number => (m-1) = (n+1)-1 or (m-1) = (n+1)+1
_________________
simplyjat |
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joshi.komal
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| Posted: Sat Jan 19, 2008 2:45 am Post subject: |
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| simplyjat wrote: | m,n are consecutive numbers => m = n-1 or m = n+1
m-1, n+1 are consecutive number => (m-1) = (n+1)-1 or (m-1) = (n+1)+1 |
Oh I see:
if m > n then m-1 = (n+1) - 1
= n
which proves that m= n+1
This is the proof that the question is asking for.
Thanks
Komal |
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joshi.komal
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| Posted: Sat Jan 19, 2008 2:48 am Post subject: |
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| simplyjat wrote: | m,n are consecutive numbers => m = n-1 or m = n+1
m-1, n+1 are consecutive number => (m-1) = (n+1)-1 or (m-1) = (n+1)+1 |
Thanks simplyjat for this explaination. |
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