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2 October, 13:16

Outside a home, there is a 5 -key keypad with letters Upper A comma Upper B comma Upper C comma Upper D and comma Upper E that can be used to open the garage if the correct five -letter code is entered. Each key may be used only once. How many codes are possible?

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  1. 2 October, 13:22
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    120

    Explanation:

    5*4*3*2*1
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