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The total number of times, the digit 3 will be written when the integers having less than 4 digits are listed is equal to a. b. c. d.
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boys and girls are to be seated in a row such that there are atleast boys between the girls. The number of ways this can be done is , then the value of , isQuestion 2
A cabinet of ministers consists of 11 ministers, one minister being the chief minister. A meeting is to be held in a room having a round table and 11 chairs round it,one of them being meant for the chairman. The number of ways in which the ministers can take their chairs, the chief minister occupying the chaiman's place, is: 
| Question Text | The total number of times, the digit 3 will be written when the integers having less than 4 digits are listed is equal to
a. b.
c. d. |
