The room numbers of a hotel are all three-digit numbers. The first digit represents the floor and the last two digits represent the room number. The hotel has rooms on five floors, numbered 1 to 5. It has 35 rooms on each floor, numbered n01 to n35 where n is the number of the floor. In numbering all the rooms, how many times will the digit 2 be used?
Select one option, then click Submit.
60
65
95
100
105
Select an option, then submit.
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Junior Kangaroo 2019 (2019)
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