Cards

Example

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

8
2
7
 
 
740
 - 
 
 
428
 - 
 
 
178
 - 
 
 

Solution

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

8
2
7
 
 
740
 - 
728
 
428
 - 
287
 
178
 - 
278
 
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