How much does a ball cost?
Understand the Problem
The question is asking for the price of a ball, which could refer to any type of ball (e.g., a sports ball, a toy ball, etc.). The answer would likely depend on the specific type and brand of the ball in question.
Answer
The ball costs $0.05 (5 cents).
The final answer is the ball costs $0.05 (5 cents).
Answer for screen readers
The final answer is the ball costs $0.05 (5 cents).
More Information
This classic puzzle tests your problem-solving and mathematical reasoning. It is part of the Cognitive Reflection Test, designed to measure the ability to suppress an intuitive and spontaneous wrong answer.
Tips
A common mistake is assuming the ball costs $0.10, leading to a total of $1.20 instead of $1.10.
Sources
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