Cards

Example

Use 3 cards to build 3-digit number, which are as close as possible to the entered numbers.

7
6
1
 
 
879
 - 
 
 
764
 - 
 
 
457
 - 
 
 

Solution

Use 3 cards to build 3-digit number, which are as close as possible to the entered numbers.

7
6
1
 
 
879
 - 
761
 
764
 - 
761
 
457
 - 
617
 
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