How many 4 digit numbers are there which do not contains more than one zero?

Owenb5

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Apr 3, 2017
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How many 4 digit numbers are there which do not contains more than one zero?

tyy!!!
 
How many 4 digit numbers are there which do not contains more than one zero?

tyy!!!
What are your thoughts?

Please share your work with us ...even if you know it is wrong.

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How many 4 digit numbers are there which do not contains more than one zero?
Is the term "numbers" meant to be "numbers in the usual sense, so "0010" is not valid? Or are you needing to find all sets of four digits, so "0010" is valid?

When you reply, please include a clear listing of your efforts so far. Thank you! ;)
 
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