Sally is one of the two sisters in the family.
Since the family has only two sisters total, Sally has one sister.

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

Given information:

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

Let me work out how many sisters are in the family total.

If each of Sally's 3 brothers has 2 sisters, and all the brothers are in the same family, then there must be 2 sisters total in the family.

Since Sally is one of those sisters, and there are 2 sisters total, Sally must have 1 sister.

Therefore, Sally has 1 sister.

No.

• 9.11 equals 9.110
• 9.9 equals 9.900

Since 0.110 < 0.900, 9.11 is smaller than 9.9. Therefore 9.11 < 9.9.

No, 9.11 is not greater than 9.9.

To compare these decimal numbers:

• 9.11 = 9.11
• 9.9 = 9.90

Since both numbers have the same whole number part (9), we compare the decimal parts:

• 0.11 vs 0.90
• 11 hundredths vs 90 hundredths

Therefore, 9.9 is greater than 9.11.

Here are five jokes for you:

1. Why don’t skeletons fight each other?
   They don’t have the guts.

2. What does a cloud wear under its jacket?
   Thunderwear.

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

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

5. Why did the math book look sad?
   Because it had too many problems.

How many are unique?
All five jokes are unique – 5 distinct jokes.

Here are 5 jokes for you:

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

4. I'm reading a book about anti-gravity. It's impossible to put down!

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

All 5 jokes are unique - each one has a different setup, punchline, and comedic concept. They cover different types of wordplay: scientific puns (#1, #4), visual humor (#2), food puns (#3), and agricultural wordplay (#5).