Rules for the exercise

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Cards

Instructions:

There are three or four cards with digits. Your task is to put them in a three-digit or four-digit number that is as close as possible to the selected numbers (that can be larger or smaller).

Use 4 cards to build 4-digit number, which are as close as possible to the entered numbers.

4
8
1
9
 
 
8544
 - 
 
6570
 - 
 
3897
 -