perplexus.info :: Probability : Random +,

Random +, - or / Random (Posted on 2009-08-24)

Let A and B each be random real numbers chosen from the uniform interval (0,1).

Call X the first nonzero digit of A+B.
Call Y the first nonzero digit of A-B.
Call Z the first nonzero digit of A/B.

Find the probability distribution of each random variable.

See The Solution Submitted by Jer

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