This riddle puzzles thousands of Americans – I wonder if you’re clever enough to handle it
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The riddle below has made thousands of Internet users scratch their heads in bewilderment. Can you solve it?
A man has 9 sons. Each son has a sister. Q: How many people are in the family?
A
B
C
ANSWER:
The answer to the riddle is 11 people.
Here’s why:
At first glance, many people assume that each of the 9 sons has a different sister, which would mean 9 sons + 9 sisters. But the riddle never says that.
It only says:
“A man has 9 sons. Each son has a sister.”
All nine sons can share the same sister.
So the family consists of:
- 1 father
- 9 sons
- 1 daughter (the sister shared by all the sons)
Total: 11 people.
Step-by-Step Solution
- The man has 9 sons.
- Every son has a sister.
- The sister can be the same girl for all nine brothers.
- Therefore, there is only 1 sister, not 9.
- Add everyone together:
9 sons + 1 sister + 1 father = 11 people
Why People Get It Wrong
The trick is in the phrase “Each son has a sister.” Our brains often interpret this as each son having his own separate sister. However, siblings can share the same sister.
That’s what makes this a classic logic riddle—it tests whether you carefully read the wording instead of making assumptions.
Final Answer: 11 people. ✅
