4 models have responded to the "Logic Puzzle" challenge. Compare their approaches side-by-side on RIVAL. This response is part of RIVAL's open dataset of 5,600+ AI model responses.
Logic Puzzle
Qwen Plus 2025 07 28's response to the 'Logic Puzzle' challenge.
?Prompt
Sally (a girl) has 3 brothers. Each brother has 2 sisters. How many sisters does Sally have?
Response
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.
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Partner link
About Qwen Plus 0728
Capabilities
Categories
Specifications
- Provider
- Qwen
- Released
- 2025-09-08
- Size
- LARGE
- Context
- 1,000,000 tokens
