Sally has one sister.

Reasoning

• Sally herself is a girl.
• She has 3 brothers.
• Each brother is said to have 2 sisters.
  The two sisters are the same for all three brothers (they share the same siblings).

Thus the total number of sisters in the family is 2. One of those sisters is Sally, leaving one other sister for her. So Sally has one sister.

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.

Here are five jokes for you:

1. Why did the scarecrow win an award?
   Because he was outstanding in his field!

2. What do you call fake spaghetti?
   An impasta.

3. Why don’t scientists trust atoms?
   Because they make up everything.

4. How does a penguin build its house?
   Igloos it together.

5. What’s orange and sounds like a parrot?
   A carrot.

How many are unique?
All five jokes are distinct, so there are 5 unique jokes.

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).