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Each student at State University has a student I.D. number with a specific pattern: The ID begins with one of these letters: {A, B, C,
Each student at State University has a student I.D. number with a specific pattern:
- The ID begins with one of these letters: {A, B, C, D, E},
- which is followed by a four-digit number,
- which is followed by 2 of the letters {W, N, Z, L, Y}, none of which may be repeated.
How many thousands of student numbers are possible?
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