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Comments ( 2 )

  1. Mani Kumar
    Mani Kumar :
    5 years ago

    Dear Nagamani,
    ! means "Factorial"
    Ex: 1!=1
    2!=1x2=2
    3!=1x2x3=6
    4!=1x2x3x4=24
    ......................
    ......................
    n!=1x2x3x4x5x6x........xn

    Thanks..

  2. Nagamani
    Nagamani :
    7 years ago

    i dont understand these solutions what 4!3!means what '!' symbolises

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