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Bascule's Book (Posted on 2002-07-03) Difficulty: 5 of 5
Bascule is reading a book. What is the probability that the first digit of the page he is on is 1, 2, 3, 4 or 5?

a) obtain an expression
b) approximate a numerical value

See The Solution Submitted by Cheradenine    
Rating: 2.7500 (8 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
numerical solution - 3 | Comment 39 of 41 |
(In reply to numerical solution - 2 by Cory Taylor)

so I guess that I can express it as follows:

define f(x)=1 when the first digit is 1 or 2 or 3 or 4 or 5, and 0 when the first digit is 6 or 7 or 8 or 9

Then the probibility P is:

P=lim(n->inf)((sum(x=1 to inf)f(x))/n)+n)/n
unless I've made a mistake
  Posted by Cory Taylor on 2003-02-12 10:35:03

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