How many letters will remain unchanged if the word EDUCATION is arranged alphabetically?

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Accepted Answer

1. Write positions $1$ to $9$: E D U C A T I O N.
2. Sort letters alphabetically: $A,C,D,E,I,N,O,T,U$.
3. Compare each position. No letter stays in the same place.
4. So **zero** letters remain unchanged.

FINAL_ANSWER: b

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