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23 August, 07:25

Eric's notebook has 30 pages he wants to write a number on each page how many digits will he right when he numbers all the pages in the notebook

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  1. 23 August, 07:29
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    51 Because if there was two numbers for each page there would be 60 page numbers but there is pages 1-9 so you subtract 9 from 60 to get your answer.
  2. 23 August, 07:36
    0
    Pages 1-9 have 1 digit each

    pages 10-30 have 2 digits each

    so 9 pages have 1 and 21 pages have 2

    9*1+21*2=9+42=51
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