Question 935108: List all possible outcomes to create a two digit number using only 5,7, and 8 as choice of numbers, repetition allowed. Find the probability of identical outcomes.
Answer by jim_thompson5910(35256)   (Show Source):
You can put this solution on YOUR website! You could have....
55, 57, 58
75, 77, 78
85, 87, 88
So you have 9 different numbers you can create.
I'm not sure what you mean by "Find the probability of identical outcomes." but I'll assume you mean the probability of getting a two digit number with repeated digits (ex: 55).
There are 3 numbers like that: 55, 77, 88
Out of 9 numbers total.
So the probability is 
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