To write all the page numbers of a book, exactly 136 times digit 1 has been used. Find the number of pages in the book.

To write all the page numbers of a book, exactly 136 times digit 1 has

1.	To write all the page numbers of a book, exactly 136 times digit 1 has been used. Find the number of pages in the book.
A.	190
B.	195
C.	210
D.	220
Answer» C. 210