1.

The number of times the digit 3 will be writtenn when listing the integers from 1 to 1000, isA. 269B. 308C. 300D. None of these

Answer» Correct Answer - C
Before 1000 there are one digit, two digits and three digits numbers.
Number of times 3 appear in one digit number `= 20 xx 9`
Number of times 3 appear in two digit number `= 11 xx 9`
Number of times 3 appear in three digit number = 21
Hence total number of times the digit 3 appear while writing the integers from 1 to 1000
`= 180 + 99 + 21 = 300`


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