Question: need help fast. Thanks Solve these problems. Show work for full credit. A new six digit code needs to be generated using hexademical characters. a)

need help fast. Thanks Solve these problems. Show work for full credit. need help fast. Thanks

Solve these problems. Show work for full credit. A new six digit code needs to be generated using hexademical characters. a) How many codes can be produced if repetition is not allowed? b) How many codes can be produced if repetition is allowed but no two characters in a row may repeat (e.g. 2E443A is not allowed because of the 44 but 2E43A4 is allowed)? c) How many codes can be produced if the first three positions must be a letter and the last three positions must be a number with repetition allowed? d) How many codes can be produced if the first three positions must be a letter and the last three positions must be a number with repetition not allowed

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