6th Class Mathematics Mental Ability Question Bank Mental Ability

  • question_answer In a chess tournament each of ten players will play every other player exactly once. How many matches will be played during the tournament?

    A)  60                              

    B)  90           

    C)  45                  

    D)  70

    Correct Answer: C

    Solution :

    Total number of matches \[=\frac{n(n-1)}{2}=\frac{10(10-1)}{2}=5\times 9=45\]

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