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How many different positive, five-digit integers can be formed using the digits 2, 2, 2, 9 and 9?

 Jun 22, 2019
 #1
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We can  choose any 2 of 5 postions for the "9s" to occupy.....so

 

5C2  =   10   five-digit integers

 

 

cool cool cool

 Jun 22, 2019

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