All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Probability
Pascal's Lottery (Posted on 2021-07-01) Difficulty: 3 of 5

Every soul is allotted 6 numbers, chosen at random from the positive integers.

If such numbers are relatively prime, then the soul is admitted to Heaven - otherwise, not.

What is the probability of an eternal reward?

What is the probability of an eternal reward, if such numbers must be pairwise prime?

Note: the integers 30, 42, 70, and 105 are relatively prime, while the numbers 121, 122, and 123 are pairwise prime, see the definitions at https://primes.utm.edu/glossary/xpage/RelativelyPrime.html

No Solution Yet Submitted by broll    
Rating: 4.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: Question | Comment 5 of 6 |
(In reply to Question by Math Man)

Though you can't pick a random number without specifying an interval or distribution.  The idea in comparing two numbers to see if they are coprime is:

For any prime, p.  There is a 1/p chance that a given integer has p as a factor.  Thus for two randomly chosen integers, the probability they both have p as a common factor is 1/p^2.
The sum of the squares of the primes (with several proofs) is at


  Posted by Jer on 2021-07-01 17:11:05
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (12)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2024 by Animus Pactum Consulting. All rights reserved. Privacy Information