#3**0 **

Rom was incorrect? Sorry about that. This will be better.

https://math.stackexchange.com/questions/3157642/counting-pairs-of-animals

CalTheGreat Apr 5, 2020

#4**+4 **

I also got the same answer as the people on that website, but it was also incorrect.

SpongeBobRules24
Apr 5, 2020

#6**0 **

We can pair them up in 5*4*7 which is 140 ways. (They are distinguishable, remember?)

CalTheGreat Apr 5, 2020