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Maths Puzzle
How many pages the book have, if total 300 digits are used to form the page numbers?
Read Solution (Total 6)
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- 136 pages
First 9 pages .. 9 digits
next 90 pages .. 180 digits
next 37 pages ... 111 digits
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Total ...136 pages ...300 digits - 11 years agoHelpfull: Yes(11) No(1)
- 136 pages
First 9 pages .. 9 digits
next 90 pages .. 180 digits
next 37 pages ... 111 digits
----------------------
Total ...136 pages ...300 digits - 11 years agoHelpfull: Yes(1) No(1)
- 136 pages
First 9 pages .. 9 digits
next 90 pages .. 180 digits
next 37 pages ... 111 digits
----------------------
Total ...136 pages ...300 digits - 11 years agoHelpfull: Yes(1) No(1)
- 136 pages
First 9 pages .. 9 digits
next 90 pages .. 180 digits
next 37 pages ... 111 digits
----------------------
Total ...136 pages ...300 digits - 11 years agoHelpfull: Yes(0) No(0)
- pages 1-9=1 digit per page * 9 pages = 9 digits
pages 10-99=2digits per page * 90 pages = 180 digits
pages 100-300 = 3 digits per page * 201 pages = 603 digits
603+180+9=792 digits - 11 years agoHelpfull: Yes(0) No(7)
- 136 pages
First 9 pages .. 9 digits
next 90 pages .. 180 digits
next 37 pages ... 111 digits
----------------------
Total ...136 pages ...300 digits - 10 years agoHelpfull: Yes(0) No(0)
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