A student number system for a county requires that the student number be 5 characters.
The first 4 characters are any single digit number, but no character can repeat and the last
character must be a letter. How many unique student numbers are possible?
30,240
131,040
260,000
315,160
+1
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Home » Mathematics » A student number system for a county requires that the student number be 5 characters. The first 4 characters are any single digit number, but no character can repeat and the last character must be a letter.