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Thread: Maths exam soon! Help :(

  1. #1
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    Maths exam soon! Help :(

    Hello guys so I have a maths exam in about a months time , as always I screwed up and left some of the topics till now. I really need help and a explanation or steps on how to do some of these questions.

    I have posted screenshots below. Please note calculators are allowed and its multiple choice so if anyone has any shortcuts on how to get the right answer it would be appreciate , just any methods that can help me get through this.

    Thanks!!

    http://prntscr.com/j5547x
    Last edited by topsquark; Apr 17th 2018 at 12:03 PM.
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  2. #2
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    Re: Maths exam soon! Help :(

    The first thing I notice is that Graph B has 5 vertices while Graphs A and C have 4. Matrix ii has 5 rows and columns while matrices i and iii have four rows and columns. What does that tell you? The other thing I notice is that Graph A has three paths from $\displaystyle v_1$ to $\displaystyle v_2$ while Graph C has only two paths from $\displaystyle v_a$ to $\displaystyle v_b$.
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