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Aliens

Logic puzzles require you to think. You will have to be logical in your reasoning.

 

Puzzle ID:#29774
Fun:*** (2.59)
Difficulty:*** (2.16)
Category:Logic
Submitted By:npf2005*
Corrected By:Winner4600

 

 

 



100 aliens attended an intergalactic meeting on earth.

73 had two heads,
28 had three eyes,
21 had four arms,
12 had two heads and three eyes,
9 had three eyes and four arms,
8 had two heads and four arms,
3 had all three unusual features.

How many aliens had none of these unusual features?


Answer

4 aliens.

Draw a venn diagram.

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