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How many natural numbers between 300 and 500 contain the digit 2?

 Jan 27, 2020
 #1
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numbers that end in 2:        20

 

numbers that have tens digit 2:           20 

 

numbers that have hundreds digit 2:      0

 

numbers overcounted:           2              (the numbers we overcounted were 322 and 422)

 

 

 

Answer = 20+20-2 = 38.

 

- PM

 Jan 27, 2020

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