perplexus.info :: Probability : Slim chance?

Slim chance? (Posted on 2022-03-28)

Two non-zero digits x and y were randomly (uniform distribution) generated by a computer.

I. What is the probability that x-y is a multiple of 4 ?
Ii. Same question for 5 instead of 4.

No Solution Yet Submitted by Ady TZIDON

Rating: 4.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

Puzzle Answer

Comment 5 of 5 |

____

I. The probability that x-y is a multiple of 4 is 7/27 ~= 0.259

________

Ii. The probability that x-y is a multiple of 5 is 17/81 ~= 0.209876

Posted by K Sengupta on 2022-07-12 22:28:58

Please log in:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (1)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info