Mathematics, 13.03.2021 14:00 diamondgray2003
A) Sarah forgot her 5-digit school ID number. She knows every digit is either a 2, 3, or 5. How many different ID
numbers exist with that restriction?
B) Sarah remembers now that there are exactly two 2s, two 3s, and one 5 in her ID number. How many different ID numbers exist with that restriction?
C) Sarah remembers that the last digit is 5. Of the other four digits, exactly two are 2a and two are 3s. How many different ID numbers exist with that restriction?
Answers: 3
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A) Sarah forgot her 5-digit school ID number. She knows every digit is either a 2, 3, or 5. How many...
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