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8 February, 00:34

How many different 4 letter arrangements can be formed from the letters in the word cards

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  1. 8 February, 02:57
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    Slot method

    1st slot, 5 options

    2nd slot, 4 options (1 gone to the first slot)

    3rd slot, 3 options (1 gone again)

    4th slot, 2 options (1 less)

    multiply

    5*4*3*2=120

    answer is 120 arrangements
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