perplexus.info :: Probability : My phone is 2543663

My phone is 2543663 (Posted on 2014-04-15)

I repeat rolling a fair die and writing the result down, - after a while I let the software to continue random generation of the integers 1 to 6 till the 1000th digit.

What is the probability for my 7-digit phone number being somewhere within the sequence?

Submitted by Ady TZIDON

Rating: 3.5000 (2 votes)

Solution: (Hide)

1-(1-(1/6)^7)^994
app. 0.0035445
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Comments: ( You must be logged in to post comments.)

Subject	Author	Date
re(2): Two different exact answers	Steve Herman	2014-04-16 09:39:06
re: Two different exact answers	Charlie	2014-04-15 23:47:38
Two different exact answers	Steve Herman	2014-04-15 18:29:07
Not likely (spoiler)	Steve Herman	2014-04-15 12:56:20
solution	Charlie	2014-04-15 12:49:18

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