Question

Найдите: 36! /33! 18! /20!

Answer 1

36! /33!  = 1*2*3*...*33*34*35*36/1*2*3*...*33 = 34*35*36 = 42840

18! /20! = 1*2*...*18/1*2*3*...*18*19*20 = 1/19*20 = 1/380

Answer 2

$frac{33!*34*35*36}{33!}= 34*35*36=42840$

$frac{18!}{18!*19*20}=frac{1}{19*20}=frac{1}{380}$