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How many 5-digit numbers have at least one 2 or one 3 among their digits?

 Apr 20, 2018
edited by gueesstt  Apr 20, 2018
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How many 5-digit numbers have at least one 2 or one 3 among their digits?

How many 5 digit numbers are there

 

9*9*8*7*6 = 27216

How many are there that do not have a 2 or a 3 as any digit.

7*7*6*5*4 = 5880

 

27216-5880 = 21336

 Apr 20, 2018

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