Brain teaser conceived by my professor

  • Thread starter tamtam402
  • Start date
  • #1
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My professor is a brain teasers fanatic and he told us his favorite one, which is one he made himself. He says only 4 persons have gotten it so far, and he's been telling it to all his classes for over 10 years. No one got it right this year =(

I am usually long, but I can be short
I can breath, but it is not essential to me
I never sleep
I am often counted, but rarely noticed
I cannot see my brothers and sisters
 

Answers and Replies

  • #2
1,679
3
Earthworm?
 
  • #3
918
16
Bacterium
 

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