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Answer:  8  7  6
The first hint indicates numbers 1,2,3 are not in the combination.
By joining the first and third hints we deduce that number 6 is part of the combination.
The second hint indicates that 6 is the third number in the combination and numbers 4 and 5 are not in the combination.
The last hint indicates that 8 and 9 are in proper order.

But 9 is impossible beacause 6 is already in that place.
Therefore 8 is the first number of the combination.
Hint four indicates that 7 is the second number of the combination.

AI answer
Here are the hints again:
- None of the numbers in the first row (1 2 3) are correct.
- One of the numbers in the second row (4 5 6) is correct and in the proper sequence.
- One of the numbers in the third row (6 1 2) is correct but not in the proper sequence.
- One of the numbers in the fourth row (5 4 7) is correct but not in the proper sequence.
- One of the numbers in the fifth row (8 4 9) is correct and in the proper sequence.

Based on these hints, we can deduce that the correct combination is 465.
The second hint tells us that one of the numbers in the second row is correct and in the proper sequence.
Since the first number is incorrect, the only possibility is that the second number is correct and in the proper sequence.
The third hint tells us that one of the numbers in the third row is correct but not in the proper sequence.
Since the second number is already accounted for, the only possibility is that the third number is correct but not in the proper sequence.
The fourth and fifth hints tell us that one of the numbers in each row is correct but not in the proper sequence.
Since the third number is already accounted for, the only possibility is that the first number is incorrect.
Therefore, the correct combination is 465.


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