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probability, permutation and combination......

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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Source: — Quantitative Reasoning |
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by cindyqtran » Mon Aug 27, 2007 4:56 pm
hey,
I have a question from your "praticeprob.pdf." can you explain how you got 1/9 for the first problem?
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by Bharat » Fri Sep 14, 2007 12:02 am
The problem asks for the odd in favor of selecting digit 7 out of a set of 10 numbers.
You have 1 favorable & 9 non favorable events.
Hence odds in favor of selecting 7 are: 1/9
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by rabab » Fri Sep 05, 2008 10:41 pm
hey thanks! that was useful.
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by dev.gavande » Mon Sep 12, 2011 9:37 pm
Thanks
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by globalmba » Wed Sep 14, 2011 2:50 am
These words are terrifying but it will became interesting and easy when you have a good knowledge about permutation and combination.
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