Hey Guys,
I have a small confusion here.Can anybody please explain what does a positive difference between a and b means.I seem to have understood it,but the same doubt keeps creeping in my head.
Thank you.
Dan
HeyAny Inputs would be great
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The positive difference between a and b is equal to the DISTANCE between a and b: ab.dddanny2006 wrote:Hey Guys,
I have a small confusion here.Can anybody please explain what does a positive difference between a and b means.I seem to have understood it,but the same doubt keeps creeping in my head.
Thank you.
Dan
If a=2 and b=3, the positive difference = 23 = 1 = 1.
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positive difference between a and b = distance between a and b on the number line OR absolute value of a  b
If you knew which number was bigger then you would not require the mod sign (if a > b then a  b is the positive difference)
In fact differences are always positive
If you knew which number was bigger then you would not require the mod sign (if a > b then a  b is the positive difference)
In fact differences are always positive
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Hi dddanny2006,
Both Mitch and mevicks have provided the technical math definition to your question. Here's a bit simpler of a way to think about it:
Take two numbers, say 2 and 5. What COULD the difference between these two numbers be?
2  5 = 3
5  2 = +3
Since you're asking about the POSITIVE DIFFERENCE, then the answer must be +3
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Both Mitch and mevicks have provided the technical math definition to your question. Here's a bit simpler of a way to think about it:
Take two numbers, say 2 and 5. What COULD the difference between these two numbers be?
2  5 = 3
5  2 = +3
Since you're asking about the POSITIVE DIFFERENCE, then the answer must be +3
GMAT assassins aren't born, they're made,
Rich

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Just to emphasize an earlier remark  there is no such thing as negative difference! (That would mean that a number is less different than 0 from itself, or more like itself than itself.)
"Positive difference between a and b" = "difference between a and b" = a  b
"Positive difference between a and b" = "difference between a and b" = a  b