father = 19 people. But that’s where the trap lies.
The riddle never said each son had a different sister. It only said:“A man has 9 sons. Each son has a sister.”
Think carefully. Could all nine sons share the same sister? Yes. That’s the trick.
So let’s break it down slowly:
9 sons – obvious.
1 sister – the sibling shared by all sons.
1 father – the man who is the parent of these children.
Add them together: 9 + 1 + 1 = 11 people.
It’s that simple… once you’ve read it carefully.
Why So Many People Get It Wrong
The phrasing tricks our
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