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Monday, October 29, 2012

Math Problem of the Week (October 29th-November 2nd)

How many two-digit positive integers have at least one 7 as a digit?

4 comments:

  1. the answer is 18 numbers it starts from 17 & ends at 97

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  2. There are 18 two-digit positive integers with at least one 7 as a digit.

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  3. 18 your not counting 7 and you start at 17 and end at 97

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  4. The answer is will be 18 numbers it starts from 17 and
    ends at 97

    ReplyDelete