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A comment on In a study of senior CS majors, U.S. students are tops in skills. Parent comment

Re:In a study of senior CS majors, U.S. students are tops in... by djaouen on Saturday March 23, 2019 @08:53PM (#19473323)
> A personal identification number that opens a certain lock consists of a sequence of 3 DIFFERENT digits from 0 though 9, inclusive. How many possible PINs are there?

Do people really struggle with problems like these?

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