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27 June, 18:15

A combination lock has a code consisting of 3 numbers, each of which can be 0 to 39, with numbers repeated. Jillian says that there are only 120 possible codes. Is Jillian correct? If not, explain her error.

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  1. 27 June, 21:14
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    39*3=117 not 120 so that is why she is wrong
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