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Math Help - Number of combinations.

  1. #1
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    Number of combinations.

    Number of combinations.-b.jpg

    in the above figure how many possible ways are there to move in right direction

    i am getting 4C1(3C2*1C1*(1/4)^3)+(3C1*1C1*1C1*(1/4)^3)

    can yu help me in how to find the probabilty
    Last edited by mr fantastic; July 26th 2011 at 09:47 PM. Reason: Title.
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  2. #2
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    Re: prob

    Assuming we are standing at the origin? The probability of?
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  3. #3
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    Re: prob

    Hello, prasum!

    Click image for larger version. 

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    in the above figure, how many possible ways are there to move in right direction?
    . . What does this mean?

    i am getting: 4C1(3C2*1C1*(1/4)^3) + (3C1*1C1*1C1*(1/4)^3)

    Can you help me in how to find the probabilty?
    . . The probability of what?
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  4. #4
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    Re: prob

    Quote Originally Posted by Soroban View Post
    Hello, prasum!
    it is starting from origin
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  5. #5
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    Re: prob

    Now which is the 'right' (as in 'left or right' or as in 'right or wrong') direction?
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  6. #6
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    Re: prob

    left or right
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