Logic riddle:

[Fort Fun Indiana]

You are sitting in the park and meet a girl. She says she has one sibling.

What is the probability her sibling is also female?

(Assume no identical twins)

 

[norwegen]

If her sister's a moonbat, it would be 50/50.

 

[Auld Phart]

33 1/3%

Could be male, female, or trans.

 

[norwegen]

In a normal world, I'd say 25 percent.

 

[Meathead]

33 1/3%

Could be male, female, or trans.

LOL. This has gotten a lot more complicated with gender fluidity.

 

[Fort Fun Indiana]

LOL. This has gotten a lot more complicated with gender fluidity.

Yes, you guys can't even struggle through a simple math problem without your fetish taking over your senses. I did see that coming.

 

[Meathead]

Yes, you guys can't even struggle through a simple math problem without your fetish taking over your senses. I did see that coming.

You're a liberal. Are we assuming there are only two sexes?

 

[Fort Fun Indiana]

You're a liberal. Are we assuming there are only two sexes?

You are a GOPer. So try to remember we are assuming they aren't also cousins.

 

[Auld Phart]

You are sitting in the park and meet a girl. She says she has one sibling.

What is the probability her sibling is also female?

(Assume no identical twins)

Is the sibling human, or a member of the animal kingdom?

(In todays world, she may consider her sibling a dog, cat, or fish)

 

[Fort Fun Indiana]

Is the sibling human, or a member of the animal kingdom?

(In todays world, she may consider her sibling a dog, cat, or fish)

You are not going to hide your inability to understand or solve the problem by being a smartass. Not that I don't respect smartassery.

 

[yidnar]

You are sitting in the park and meet a girl. She says she has one sibling.

What is the probability her sibling is also female?

(Assume no identical twins)

100% if her brother is a gender confused democrat !

 

[Meathead]

Is the sibling human, or a member of the animal kingdom?

(In todays world, she may consider her sibling a dog, cat, or fish)

Given the OP, this could be some kind of diversity training. LOL

 

[Fort Fun Indiana]

Well, it's pretty easy to see who took college math, and who did not.

But even so, one should be able to reason out the answer.

 

[Otis Mayfield]

Prob(two girls | at least one girl)
= Prob(at least one girl | two girls) * Prob(two girls) / Prob(at least one girl)
= Prob(at least one girl | two girls) * Prob(two girls) / (1 - Prob(no girls))
= 1 * (1/4) / (1 - 1/4)
= 1/3

Or so google says. I never would've guessed it.

 

[CrusaderFrank]

You are sitting in the park and meet a girl. She says she has one sibling.

What is the probability her sibling is also female?

(Assume no identical twins)

Wait is her sister a biological female or only identifies as a "female - birthing person" or whatever we call them today

 

[Fort Fun Indiana]

Prob(two girls | at least one girl)
= Prob(at least one girl | two girls) * Prob(two girls) / Prob(at least one girl)
= Prob(at least one girl | two girls) * Prob(two girls) / (1 - Prob(no girls))
= 1 * (1/4) / (1 - 1/4)
= 1/3

Or so google says. I never would've guessed it.

Google also says Obama is the king of the United States.

 

[Fort Fun Indiana]

Maybe I should have picked an easier riddle for USMB.

 

[norwegen]

Prob(two girls | at least one girl)
= Prob(at least one girl | two girls) * Prob(two girls) / Prob(at least one girl)
= Prob(at least one girl | two girls) * Prob(two girls) / (1 - Prob(no girls))
= 1 * (1/4) / (1 - 1/4)
= 1/3

Or so google says. I never would've guessed it.

Without using Google, here is is how I arrived at 25%.

The girl could be the older sibling or the younger sibling. Assuming she's the older sibling:

G G (younger sibling is a girl)

G B (younger sibling is a boy)

B G (N/A)

B B (N/A)

That's one in four.

But I could be wrong.

 

[Meathead]

Maybe I should have picked an easier riddle for USMB.

Well, you know, in recent years there's been a lot of gender confusion.

 

[Fort Fun Indiana]

Without using Google, here is is how I arrived at 25%.

The girl could be the older sibling or the younger sibling. Assuming she's the older sibling:

G G (younger sibling is a girl)

G B (younger sibling is a boy)

B G (N/A)

B B (N/A)

That's one in four.

But I could be wrong.

I would say...not quite. But you touch on the semantic debate regarding the correct method and answer.