How many people were at least on the plane? The answer makes you doubt IQ

How many people were at least on the plane? The answer makes you doubt IQ

2025/07/11

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Recently, a logical question about family relationships has sparked heated discussions on major social platforms! The title describes the relationship between the passengers on an airplane: there are 3 fathers and sons, 3 mothers and sons, and 3 brothers and sisters. This deceptively simple math problem resulted in 99% of the participants giving the wrong answer!

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Common Wrong Answers:

1. Direct addition: 3 3 3 = 9 people (wrong) 2. Consider partial recurrence: 6-7 people (still wrong)3. Ignoring key family relationships (completely detached)

Correct Answer Analysis:

Only a minimum of 5 people is required! Specific Composition:1.

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Grandfather (as father)2. Father (grandfather's son, also father)3. Mother4. Son 5. daughter

So satisfied:

• 3 fathers and sons: grandfather, father, son

• Mother and 3 children: mother, son, daughter

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