perplexus.info :: Probability : Probing the prob.

Probing the prob. (Posted on 2014-01-21)

Chose at random two distinct decimal digits.
Denote them as A & B.

1. What is the probability that:AB is less than A+B?
2. Same question, but with the word "distinct" erased.

See The Solution Submitted by Ady TZIDON

Rating: 3.0000 (1 votes)

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

re(3): 2nd question first (spoiler) rethink.

Comment 5 of 5 |

(In reply to re(2): 2nd question first (spoiler) rethink. by Charlie)

Sorry.

There is no flaw...

I just did not notice that the 1st was 2nd and the 2nd was 1st .

Posted by Ady TZIDON on 2014-01-21 14:06:13

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 (3)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info