the factorial answer for 11!_8!

Question

i will be over the moon if you could solve this problem for me 8!/(24-12)!,9!/(8-3)!,5!/2!,22!/19!,21!/(21-(21-5)

Answer 1

??????? wotz that underline bar in 11!_8!?????

???? "over the moon" = ???? "outa yer mind" ????

8! / (24-12)!=8! / 12! =1/(9*10*11*12)

9! / (8-3)! =9!/5!=6*7*8*9

5!/2=5!/2 =3*4*5