perplexus.info :: Probability : Random + Random + Random

Random + Random + Random (Posted on 2009-08-28)

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

Call X the first nonzero digit of A+B+C.

Find the probability distribution of X.

See The Solution Submitted by Jer

Rating: 3.0000 (1 votes)

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Puzzle Thoughts

Comment 2 of 2 |

P(X)=1 = 4003/5994

P(X)=2 = 1018/5994

P(X)=3 = 37/5994

P(X)=4 = 61/5994

P(X)=5 = 91/5994

P(X)=6 = 127/5994

P(X)=7 = 169/5994

P(X)=8 = 217/5994

P(X)=9 = 271/5994

Posted by K Sengupta on 2024-03-12 08:11:55

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