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Homework Help: Question in probability

  1. Nov 17, 2013 #1
    Hi
    Here is a question with answer can please check my answers

    http://store2.up-00.com/2013-11/1384723924451.jpg [Broken]
     
    Last edited by a moderator: May 6, 2017
  2. jcsd
  3. Nov 17, 2013 #2

    haruspex

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    The working and answers I see look fine, but I don't see an answer to part b.
     
  4. Nov 17, 2013 #3
    But is that formul for a and b correct ?
     
  5. Nov 17, 2013 #4

    haruspex

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    Yes, I said the working looked fine.
     
  6. Nov 17, 2013 #5
    Ok
    1 - 0.8 = 0.2 this answer for what ?
     
  7. Nov 17, 2013 #6

    haruspex

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    That's a strange thing to ask. Don't you know which question it was your answer to? Is this not your own working?
     
  8. Nov 18, 2013 #7

    Ray Vickson

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    Please do NOT post sideways-oriented jpgs of your documents; I found your document too difficult to read, so I could not be bothered to look at it further: it hurt my neck to try. Why not just type out the question and your answer? The question is pretty short and your answers are short as well.
     
    Last edited by a moderator: May 6, 2017
  9. Nov 18, 2013 #8

    LCKurtz

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    I wholeheartedly agree. I dismissed the thread immediately when I saw the .jpg.
     
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