ahelenaraine ahelenaraine
  • 01-10-2018
  • Mathematics
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Give the digits 0-9, how many 4 digit numbers can be made if digits can be used more than once

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lovebobjr lovebobjr
  • 01-10-2018

9+1  

9+2  

9+3  

9+6  

9+7  

9+8  

and  

8+2  

8+3  

8+6  

8+7  

and  

7+4  

7+6  

7+7  

7+9  

hope it hepls


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