The final challenge will be the count how many threads he made.
mooman: (110!/2!)/109!= 110!/(109!*2!) = 110/2 = 55
I do not get why you do those divisions; more than understanding n!
if you want 100*99*98*...*3*2*1 you write 100!. But if you want for example 100*99*98*...*13*12*11 you should write 100!/10!. I could've written 2 instead of 2! but I thought it was clearer lol. Because the numerators go from 3 to 110