1.

The number of times the digit 5 will be written when listing the integers from 1 to 100, isA. 271B. 272C. 300D. None of these

Answer» Correct Answer - 3
`=---:`digits are from 0 to 9
= (only once )+(twice )+(thrice)
`=""^(3)C_(1) .9.9(1)+3C_(2).9(2)+3C_(3).1(3)`
=3.81 + 3.18 + 1.3
=300


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