Respuesta :

abrhamatnafu2013

Step-by-step explanation:

11!/9!

then we calculate ,

11×11+11×10+............+11×0/9×9+9×8+9×7+.....9×0

wegnerkolmp2741o

Answer:

110

Step-by-step explanation:

11!

------

(11-2)!

11!

------

9!

11*10*9*8*7*6*5*4*3*2*1

---------------------------------------

9*8*7*6*5*4*3*2*1

We can cancel like terms

11*10

--------

1

110