Logic Puzzle

Let's break this down step by step:

• Sally has 3 brothers.
• Each brother has 2 sisters.

Now, the key is to realize that all the brothers share the same siblings.

So, when it says each brother has 2 sisters, those sisters are the same for all brothers.

Sally is one of those sisters. So who is the other sister?

Since each brother has 2 sisters, and Sally is one, there must be one more sister.

Therefore, Sally has 1 sister.

(Note: From Sally’s perspective, she has 3 brothers and 1 sister — the other girl.)

✅ Answer: Sally has 1 sister.