SOLUTION: if an integer is randomly chosen from the first 50 positive integers, what is the probability that an integer with a digit of 3 is selected?

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Question 1096062: if an integer is randomly chosen from the first 50 positive integers, what is the probability that an integer with a digit of 3 is selected?
Found 2 solutions by luke94, jim_thompson5910:
Answer by luke94(89) About Me  (Show Source):
You can put this solution on YOUR website!
Write out all the integers that have a digit of 3 in the first 50 positive integers:
> 3,13,23,30,31,32,33,34,35,36,37,38,39,43
Then, count how many times there is an integer with a digit of 3 which is 14 times.
therefore,
14%2F15+=+0.28 or 28%

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

The tutor @luke94 has the correct idea, but made a typo. It should be 14%2F50+=+0.28 (change the 15 in the denominator to 50)