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jimmyjamesdonkey
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The OG 11 Quant section has very few Perm/Combination Updated on: 11 Jul 2007, 14:32
Originally posted by jimmyjamesdonkey on 11 Jul 2007, 09:31.
Last edited by jimmyjamesdonkey on 11 Jul 2007, 14:32, edited 1 time in total.
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The OG 11 Quant section has very few Perm/Combination problems listed, maybe only 4-5 max toward the very very end. How represenative is the OG to what you can expect on the GMAT.

At what score in Quant can a person expect to see a Combination/Permutation problem?



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anonymousegmat
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The OG 11 Quant section has very few Perm/Combination 11 Jul 2007, 13:50
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jimmyjamesdonkey
The OG 11 Quant section has very few Perm/Combination problems listed, maybe only 4-5 max toward the very very end. How represenative is the OG to what you can expect on the GMAT.

At what score in Quant can a person expect to see a Combination/Permutation problem?
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many people on this board seem to concur that the OG doesn't really have many 'hard' questions and stops at medium/medium hard level.

I think you can see P&C problems at any level; for example... all test takers will see questions that are being pretested for future use. For the researchers to have accurate statistical data on the pretested questions, the deployment has to be totally random.

The lot of pretest questions you see can come in any order from any difficulty bin. By random chance alone, if there are n questions to be tested, your first 'n' questions could all be the ones being tested. also by random chance alone, they could all be from the highest level of difficulty.

Will this happen to you? Probably not. Still I think anyone scoring above 500 should be comfortable with basic P&C methods. I mean how hard is it to figure how many ways there are to arrange 4 people in a row? 4! or how hard is it to figure how to choose a team of 3 from 5 -5C3. I think almost anyone can see this type of question... as it isn't difficult.

When they start throwing in constraints; or the mix combinatorics with probabilty, or gemoetry, or, or number properties or statistics... that is probably 650-700+ level



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Hi there,
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