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math

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The seventh book in the harry potter series has 759 pages. How many 2s were used when typing the page numbers?

  • math -

    each ten has one two. that is 76.
    each hundred has one twenty, so that is 10 for each hundred (20,21, ..) 80
    each thousand has a 200, 201, so that is another 100

    I count 100+80+76

    check my thinking.

  • math -

    every 100 has 20 2's except in the 200's there are 120 2's

  • math -

    umm i think u added wrong cause i got 255 and u got 256

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