Find The 4 Numbers

Using the clues below, what four numbers am I thinking of?

The sum of all the numbers is 31.
One number is odd.
The highest number minus the lowest number is 7.
If you subtract the middle two numbers, it equals two.
There are no duplicate numbers.




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John and his team plan to rob a safe. They got just one chance to break the code else the local police will be informed. Below are clues:
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D) One number is part of the code of the safe but is wrongly placed: 1 4 7
E) One number is part of the code of the safe but is wrongly placed: 7 8 3

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Below, you can see three complete equations and one incomplete. Based on the three complete ones, can you complete the incomplete one?

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Find three numbers such that

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