A three-digit number is chosen at random. Is the probability that the number contains at least one zero given by #171/900#?

1 Answer
Dwight
Jan 29, 2018

Yes.

Explanation:

Between 100 and 199 there are 19 numbers having a zero. Likewise, between 200 and 299, there are 19, and so on, for nine such sets of values.

So, the number of numbers with a zero will be 171 (19 x 9)

Since there are 900 numbers in total, the probability is #171/900#

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