The number of times the digit 3 will be written when listing the integers from 1 to 1000 is

Question:

The number of times the digit 3 will be written when listing the integers from 1 to 1000 is

 

Solution:

$3_{-}-=10 \times 10=100$

$-^{3}-=10 \times 10=100$

$--3=10 \times 10=\frac{100}{300}$

 

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