Opus (and all prior Claude models) still do not correctly answer the Sally question, unfortunately:
Q: Sally (a girl) has 3 brothers. Each brother has 2 sisters. How many sisters does Sally have?
A: Okay, let's organize the information we have:
Sally is a girl.
Sally has 3 brothers.
Each of Sally's brothers has 2 sisters.
Now, let's think about this step by step:
We know that Sally is a girl, so she is a sister to her brothers.
Each of Sally's brothers has 2 sisters. One of these sisters is Sally, but who is the other sister?
Since Sally has only brothers and no other sisters are mentioned, we can conclude that the other sister for each brother is also Sally.
Therefore, Sally has no sisters other than herself.
So, the answer is that Sally has 0 sisters.
https://imgur.com/a/EawcbeL
Q: Sally (a girl) has 3 brothers. Each brother has 2 sisters. How many sisters does Sally have?
A: Okay, let's organize the information we have:
Sally is a girl. Sally has 3 brothers. Each of Sally's brothers has 2 sisters. Now, let's think about this step by step:
We know that Sally is a girl, so she is a sister to her brothers. Each of Sally's brothers has 2 sisters. One of these sisters is Sally, but who is the other sister? Since Sally has only brothers and no other sisters are mentioned, we can conclude that the other sister for each brother is also Sally.
Therefore, Sally has no sisters other than herself. So, the answer is that Sally has 0 sisters.
https://imgur.com/a/EawcbeL