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Questions  >>  Olympiad-Math  >>  Class 3
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Q)

How many 1's are used in of all the page numbers of a book from $1 - 111$?

$\begin{array}{11} (a)\; 24 \\ (b)\; 42 \\ (c)\; 39\\ (d)\; 16 \end{array}$

My answer is 36
commented Jan 30, 2022 by gupta24shivani

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