Posted by Lesly on Saturday, January 8, 2011 at 6:34pm.
From 0 to 99, there are 2*10=20 2's.
from 100 to 199, there are 20 2's.
...
from 600 to 699, there are 20 2's.
From 700 to 759, there are 20-4 2's.
How many 2's are there in all?
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