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sdasf
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Mar 9 2009, 2:44 PM EDT by
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Thread started: Mar 9 2009, 2:44 PM EDT
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god i hate probability
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problem
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Sep 28 2008, 5:49 PM EDT by
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Thread started: Oct 29 2007, 12:03 PM EDT
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I cant seem to figure out this question?
how many ways can you arrange 10 pairs of shoes in a row so that no 2 shoes match?
..any possible solutions?
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Last Reply:
RE: problem
By: Posted Anonymously,
Sep 28 2008, 5:49 PM EDT
all u have to do is multiply by 10x9= 90 den subtract 10 answer would be 80
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ok.
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Sep 21 2007, 8:40 PM EDT by
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Thread started: Sep 21 2007, 8:40 PM EDT
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It helped explain things better except for the Phone number example...dont know if its clear, maybe i should go over it again.
good stuff :)
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...
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Apr 27 2007, 11:24 PM EDT by
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Thread started: Apr 27 2007, 11:24 PM EDT
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nice work guyz! i find your lesson really helpful, your explanations are clear, this is a very hard concept but it is explained very well.
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...
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Dec 15 2006, 2:55 PM EST by
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Thread started: Dec 15 2006, 2:55 PM EST
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hey we think you guys did a great job, everything is very clear and easy to understand. We think that your use of colour was helpful in understanding the examples. Our only piece of advice would be to separate your examples in a different way because we found it a little choppy in certain places. for e.x. the transition from NUMBER OF STAGES to Fundamental or Multiplicative Counting Principle.
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spelling mistake
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Nov 21 2006, 7:34 PM EST by
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Thread started: Nov 21 2006, 7:34 PM EST
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there is a spelling mistake under a simpler method it says "nuber" instead of "number"
other than that good job.
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mistake
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Nov 10 2006, 10:04 PM EST by
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Thread started: Nov 9 2006, 8:20 AM EST
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i think example 2 part (b) needs to be checked again.
1. a phone no. cannot begin with zero. so u should have exactly 9 choices in the first blank.
2. Next in part b, if u don't want the same no. to repeat, u have exactly 9 choices because now u can include zero but not the no. u selected as the first digit.Hence, 10-1=9.
3. In part (c) , the nos. should start from 9 not 10.......excluding zero
I hope im clear!!!
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Last Reply:
RE: mistake
By: ,
Nov 10 2006, 10:04 PM EST
Arnab, you are right about everything you wrote. In fact, 2b still has errors.
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Ahhhhhhh! Chat speak!!
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Nov 10 2006, 9:04 PM EST by
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Thread started: Nov 9 2006, 5:30 PM EST
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Arnab, please do not use chat speak!!!!
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Last Reply:
RE: Ahhhhhhh! Chat speak!!
By: Posted Anonymously,
Nov 10 2006, 9:04 PM EST
Im sorry about that sir!!! But I want to know am I right or wrong????
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hey..minor mistake..i may be wrong.
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Nov 1 2006, 9:10 PM EST by
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Thread started: Nov 1 2006, 7:05 PM EST
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hi, i was just looking at example number 2 and i was wondering about how can there be a phone number begining with a zero. I may be wrong, but i am just clarifying my doubts. Thanks
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Whohoo!!
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Nov 1 2006, 7:58 PM EST by
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Thread started: Nov 1 2006, 7:58 PM EST
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Great going guys!!! Aneta, add your thing, then we're done!!!
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Example 3
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Oct 31 2006, 11:34 PM EST by
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Thread started: Oct 31 2006, 11:34 PM EST
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Example 3 is very well explained!
Where is example 2?
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is this it?
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Oct 29 2006, 4:03 PM EST by
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Thread started: Oct 29 2006, 2:37 PM EST
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I am Just wondering, if this is the whole summary. I wanted to comment on it, so i am just making sure.
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Last Reply:
RE: is this it?
By: ,
Oct 29 2006, 4:03 PM EST
That was me, btw, Anika.
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