How many numbers between 100 and 1000 have 8 in the unit's place?
10
40
90
50
Here all the numbers have three digits.
The number 8 has replaced the unit.
The middle digit can be any of the ten digits from 0 to 9.
In the hundredth place, any of the nine digits from 1 to 9 can be used.
According to the fundamental concept of counting, there are numbers between 99 and 1000 that have 8 in the unit's location.
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