Mathematics, 20.01.2021 01:40 davelezow72301
If you randomly pick a number from 1 to 25, what is the probability that the number will have “2” as one of the digits?
Answers: 2
![n\in [1, 25]](/tpl/images/1047/1319/ccd22.png)
, there are 
numbers total. The number 
appears as the ones digit for 
numbers in this interval: 
. The subset ![n\in [20, 25]](/tpl/images/1047/1319/7f33a.png)
marks the interval of numbers in the set that has the number 
numbers in this set. Since 
is counted twice, there are a total of 
numbers in the original interval that contain the number 
.
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If you randomly pick a number from 1 to 25, what is the probability that the number will have “2” as...
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