Question

Помогите решить уравнение

Answer 1

Р₅ = 5!
С₁₁⁵ = 11!/(5!*6!) = 7*8*9*10*11/1*2*3*4*5 = 7*9*10*11/3*5=462
С₁₁⁴ = 11!/(4!*7!) = 8*9*10*11/1*2*3*4=330
А₁₂⁵ = 12!/7! = 8*9*10*11*12
сам пример:
5!*(462 -330)/ (8*9*10*11*12) = 1*2*3*4*5*132/(8*9*10*11*12) =1/6

Answer 2

Спасибо

Answer 3

;)