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18 April, 17:44

A code is made up of 1 letter, out of a possible 26, in the first position. One digit, 0-9, occupies each of the second and third positions. The digit cannot be repeated. How many possible outcomes exist?

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  1. 18 April, 17:56
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    26 possibilities for the first location,

    10 possibilities for the next location,

    9 possibilities for the last location (because we've used a number in the previous slot and we're not allowed to repeat it).

    26 x 10 x 9
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