I need to work through this step-by-step.

Given information:

• Sally is a girl
• Sally has 3 brothers
• Each brother has 2 sisters

Since Sally is one of the sisters that each brother has, and each brother has 2 sisters total, that means th ere must be exactly 2 sisters in the family.

The 2 sisters are:

1. Sally
2. One other sister

Therefore, Sally has 1 sister.

Sally has 1 sister.

Here is the breakdown:

1. If each brother has 2 sisters, that means there are 2 girls in total in the family.
2. Sally is one of those girls.
3. Therefore, the other girl is Sally's only sister.

Here are 5 jokes:

1. Why don't scientists trust atoms? Because they make up everything!

2. What do you call a bear with no teeth? A gummy bear!

3. Why did the scarecrow win an award? He was outstanding in his field!

4. What do you call a fake noodle? An impasta!

5. Why don't eggs tell jokes? They'd crack up!

All 5 jokes are unique - each one has a different setup and punchline, covering different topics (atoms/scie nce, bears, scarecrows, pasta, and eggs).

Here are 5 jokes:

1. Why don't scientists trust atoms? Because they make up everything!
2. I told my wife she was drawing her eyebrows too high. She looked surprised.
3. What do you call a fake noodle? An impasta.
4. Why did the scarecrow win an award? Because he was outstanding in his field.
5. I'm reading a book about anti-gravity. It's impossible to put down.

There are 5 unique jokes.