---
title: "A man has 9 sons. Each son has a sister. Q. How many people are in the family?"
url: https://egloos.com/en/playbrain/17862
channel: "PlayBrain"
channel_url: https://egloos.com/en/playbrain
category: "Quizzes"
language: en
published: 2026-06-19T00:34:07
updated: 2026-06-19T00:34:07
---

# A man has 9 sons. Each son has a sister. Q. How many people are in the family?

**Don't overcomplicate the math! 🧠 This family riddle is tricking thousands of people into counting way too many people. Can you get the exact total? 👇**  

![](https://static.egloos.com/content/images/body/20260619/20260619003401_image.png)

Check out the brain teaser in image:

👉 **"A man has 9 sons. Each son has a sister. How many people are in the family?"**

If your first instinct was to say 19 or 20, you've fallen right into the linguistic trap! 🛑 Let's look at it logically:

**Here is the official breakdown:**

- There is **1** father.
  
- He has **9** sons.
  
- "Each son has a sister." Since they are all brothers in the same family, they all share the exact same sister! That means there is only **1** daughter in total.
  

Put them all together (1 \\ father + 9 \\ sons + 1 \\daughter), and the definitive answer is **11**! 🎯 _(Note: If you count a mother to complete the parents, 12 is also a brilliant answer!)_

Did you spot the shared sibling trick immediately, or did you start multiplying? Drop your answer in the comments below and share this to challenge your friends! 🧠✨

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