SOLUTION: george is reading a novel which has 303 pages. how many times does the digit 3 get printed in the page numbers? how many pages are there which has only one 3 present in the page nu

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Question 941027: george is reading a novel which has 303 pages. how many times does the digit 3 get printed in the page numbers? how many pages are there which has only one 3 present in the page number.

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
For pages 1 - 99, you have the following
pages with at least one 3
3
13
23
33
43
53
63
73
83
93
A total of +11+ 3's
--------------------
For pages 100 - 199, you have
the same number of 3's, +11+ 3's
--------------------------------
For 200 - 299 you have +11+ 3's
--------------------------------
Then you have:
300
301
302
303
with +5+ more 3's
---------------------
+3%2A11+%2B+5+=+38+ 3's printed total
---------------------
The number of pages that have only +1+ 3:
subtract pages:
33
133
233
303
+38+-+4+=+34+ pages with only +1+ 3 on page