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Four balls (Posted on 2017-05-19) Difficulty: 2 of 5
There are four balls in a hat: a blue one, a white one, and two red ones. Now I draw simultaneously two balls, look at them, and announce that at least one of them is red.

What is the chance that the other is red as well?

No Solution Yet Submitted by Ady TZIDON    
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  Subject Author Date
re(2): There is only one correct answer !....SPOILERAdy TZIDON2017-05-22 17:26:35
re: There is only one correct answer !....SPOILERBrian Smith2017-05-22 12:05:40
re: There is only one correct answer ! (Baye)hoodat2017-05-22 10:54:54
Hints/Tipsre(3): Who's rightAdy TZIDON2017-05-22 03:06:48
Hints/TipsThere is only one correct answer !....SPOILERAdy TZIDON2017-05-22 03:02:19
re(5): Who's rightBrian Smith2017-05-21 23:17:59
re(4): Who's rightCharlie2017-05-21 22:13:24
Hints/Tipsre(3): Who's rightBrian Smith2017-05-21 17:15:20
Solutionre(2): Who's rightCharlie2017-05-21 16:37:54
re: Who's righthoodat2017-05-20 20:59:15
Hints/Tipsre(2): Who's right?.......I AM.Ady TZIDON2017-05-20 09:38:02
Some Thoughtsre: Who's right?broll2017-05-20 02:56:51
Hints/TipsWho's right?Ady TZIDON2017-05-20 00:41:00
re(2): I agree with BrianDaniel2017-05-19 23:38:41
SolutionSolutionhoodat2017-05-19 23:10:27
re: I agree with BrianCharlie2017-05-19 23:01:06
I agree with BrianSteve Herman2017-05-19 13:28:44
SolutionSolutionBrian Smith2017-05-19 12:43:07
SolutionSolutionJer2017-05-19 11:56:13
SolutionSolution Charlie2017-05-19 11:00:34
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