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An integer x, with \(10 \leq x \leq 99\), is to be chosen. If all choices are equally likely, what is the probability that at least one digit of x is a 7?

 Aug 16, 2022
 #1
avatar+17 
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need some help

 Aug 16, 2022
 #2
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How many two-digit numbers are there?

 

How many numbers can you list out that have at least 1 7?

 

If you are still confused, feel free to ask for further help smiley

 Aug 16, 2022

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