PrEttY HaRD***MaTh RiDDle*** - CaN u dO iT?!?!?

Big Pimpin

New member
Here's the riddle:

One hundred aliens attended the intergalactic meeting on earth (ya i don't think it would be on earth either lol).
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 two heads, three eyes, and four arms.
How many had none of these unusual features?

If you can solve it AND TELL ME EACH STEP TO HOW U GOT THE ANSWER, I'll give you 10 pts.!!!!!!! thanks in advance :)
 
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