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sumande
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GMATPrep DS 12 Aug 2007, 02:04
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Check attached image please.



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GMATPrep DS 12 Aug 2007, 06:57
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sumande
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1: k could be prime or non-prime if K > 4!. if prime, k doesnot have any factor between k and 1, otherwise, it has. so nsf.
2: k is not a prime and has a factor other than 1 and k. so suff.


B
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GMATPrep DS 12 Aug 2007, 07:14
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sumande
Check attached image please.

1: k could be prime or non-prime if K > 4!. if prime, k doesnot have any factor between k and 1, otherwise, it has. so nsf.
2: k is not a prime and has a factor other than 1 and k. so suff.
B
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Thank a lot! Very stupid of me to have missed this. :oops:
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GMATPrep DS 16 Aug 2007, 08:30
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sumande
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How do I see the attached image? Can anyone please educate me.
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GMATPrep DS 17 Aug 2007, 21:08
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How do you know k doesn't have a prime for B????

Care to factor:

6227020802 (not)
6227020803
6227020804 (not)
6227020805 (not)
6227020806 (not)
6227020807
6227020808 (not)
6227020809
6227020810 (not)
6227020811
6227020812 (not)
6227020813

That seems like a super tough question...
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GMATPrep DS 17 Aug 2007, 21:09
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I believe there is another thread about this on the first page even. Consensus is B.
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GMATPrep DS 17 Aug 2007, 21:13
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But hwo can you quickly tell?

Give me a primal decomposition of 6227020807 ..... GO! :D
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GMATPrep DS 17 Aug 2007, 21:17
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StartupAddict
But hwo can you quickly tell?

Give me a primal decomposition of 6227020807 ..... GO! :D
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was also discussed here: https://www.gmatclub.com/phpbb/viewtopi ... ht=#357217



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Hi there,
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