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A book has 100 pages, How many times is the digit ''3'' used numbering its pages?
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Dec 12, 2023
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A book has 100 pages, How many times is the digit ''3'' used numbering its pages?
Mathematics
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Syngularity
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19 pages. 3,13,23,30,31,32,33,34,35,36,37,38,39,43,53,63,73,83,93
Jbouaziz
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Dec 12, 2023
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18 pages
Because if each 10 pages consists 1 page with number 3 (3, 13, 23 and etc.)
We have 10 pages with no. 3.
Also there is 30 - 39 numbers
Excluding 33 there is 8 of that kind of pages
10 + 8 = 18
Wahrheit
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Dec 18, 2023
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