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10 persons A-J live in flats 1-10. Complex constraints. Which statement is true?

1. B lives in Flat 1
2. C lives in Flat 2
3. D lives in Flat 3
4. E lives in Flat 4

Correct answer: B lives in Flat 1

Solution

After applying all given constraints for the 10-person flat assignment puzzle, B lives in Flat 1.

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