brains. When it says “Each son has a sister,” our instinct is to imagine each son with a separate sister, multiplying in our mind. We assume uniqueness where there isn’t any.
This riddle is a classic example of why paying attention to language matters. It’s not just a math problem—it’s a test of your reading comprehension, logic, and ability to resist assumptions.
It reminds us of something important in everyday life: not everything is exactly as it appears at first glance.
Step-By-Step Solution
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Count the sons: 9
Count the sister (shared by all): 1
Add the
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