|
Date Joined: Mar 30, 2015 20:22:20 GMT -5
|
Post by kronks on Mar 12, 2018 22:42:33 GMT -5
A dog breeder says she has two new baby Labradors to show you, but she doesn't know whether they're male, female, or a pair. You tell her that you want only a male, and she telephones the fellow who's giving them a bath."Is at least one a male?" she asks him."Yes!" she informs you with a smile. What is the probability that the other one is a male?
|
|
|
Date Joined: Mar 30, 2015 20:22:20 GMT -5
|
Post by kronks on Mar 14, 2018 0:11:08 GMT -5
This is a bit tricky but the answer is a 1 in 3 chance, most expect it to be 50/50 and I did
initially although I was not entirely convinced I was correct and I wasn't.
|
|
|
Date Joined: Jun 7, 2010 10:10:35 GMT -5
|
Post by deyana on Mar 15, 2018 11:30:12 GMT -5
I would have said 50 50 too. How does 1 in 3 chance work?  |
|
|
Date Joined: Jun 7, 2010 10:10:35 GMT -5
|
Post by deyana on Mar 15, 2018 11:30:50 GMT -5
Oh because the male has already been confirmed and we don't know what the other one is..... I get it.
|
|
|
Date Joined: Mar 30, 2015 20:22:20 GMT -5
|
Post by kronks on Mar 16, 2018 0:15:17 GMT -5
Oh because the male has already been confirmed and we don't know what the other one is..... I get it. Well if you do it in birth order you can have MM MF FM or FF FF is ruled out as one is male so were are left with. MM MF FM We know one is male already so we delete that we are left with. M, F, F so it is one in three. It is kind of confusing and even top mathematicians can get it wrong, one problem is you can assume MF and FM are the same leaving just MM and FM ie 50/50 One radio program did a phone in and asked people with two children with two chidlren, at least one male to phone in and say what the sex of the other one was and it did indeed to turn out only 1 in 3 said male! |
|
|
Date Joined: Jun 7, 2010 10:10:35 GMT -5
|
Post by deyana on Mar 16, 2018 20:52:10 GMT -5
That makes sense, kronks.  |
|
