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cannot be a multiple of two positive integers a and b

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by beat_gmat_09 » Sun Nov 28, 2010 9:23 am
IMO d
(b-a) will always be less than a or b hence cannot be a multiple of either.
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by clawhammer » Sun Nov 28, 2010 9:25 am
Why not b+a? cant figure what values can satisfy this option!

What if a and b are the SAME integers? then b-a would be 0, that's a multiple of both of them.

[spoiler]But OA is b-a.[/spoiler]
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