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11th Class Mathematics Sample Paper Mathematics Olympiad - Sample Paper-7

  • question_answer
    The number of ways in which 5 different beads can be string into a necklace is:

    A)  12                               

    B)  14           

    C)  60                               

    D)  24

    Correct Answer: A

    Solution :

    [a] No. of ways of arrangement of 5 beads in a necklace \[=\frac{n-1}{2}=\frac{4}{2}=\frac{4\times 3\times 2}{2}=12\]


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