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Forums > Engineering Questions and Answers > Puzzles
What percentage of positive integers have a “7” as at least one of the digits?
Last Post 19 Sep 2013 04:13 AM by philip. 5 Replies.
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alec
Basic Member
Basic Member
Posts:167

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11 Sep 2013 04:50 PM
    what percentage of positive integers have a “7” as at least one of the digits?
    alastair
    Basic Member
    Basic Member
    Posts:132

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    12 Sep 2013 08:19 AM
    13.33
    phil
    Basic Member
    Basic Member
    Posts:133

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    12 Sep 2013 08:20 AM
    7
    chan890
    New Member
    New Member
    Posts:7

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    16 Sep 2013 12:45 AM
    19
    richards
    Basic Member
    Basic Member
    Posts:172

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    18 Sep 2013 06:32 AM
    33 percent
    philip
    Basic Member
    Basic Member
    Posts:118

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    19 Sep 2013 04:13 AM
    23 per
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