esc01720mustacmw esc01720mustacmw
  • 04-05-2021
  • Mathematics
contestada

Prove that (n-1, r)+(n, r-1)=(n,r)
​

Respuesta :

Аноним Аноним
  • 04-05-2021

Answer:

[tex] \binom{n - 1}{r} + \binom{n}{r - 1} = \binom{n}{r} \\( n - 1) + n = n \\ n - 1 = 0 \\ n = 1 \\ r + (r - 1) = r \\ r = 1 \\ \binom{0}{1} + \binom{1}{0} = \binom{1}{1}[/tex]

Answer Link

Otras preguntas

________ is the biogeochemical cycle that describes the movement of oxygen within and between it's three main reservoirs. a. Oxygen Cycle b. Carbon Cycle c. Nit
Amoebas are able to protect themselves from unfavorable conditions by forming a _____. capsid cyst pseudopodium cell wall
What is. The difference between ending the slave trade and ending slavery
Select all that apply. The body is supplied with oxygen by the _____. respiratory system circulatory system endocrine system excretory system digestive system
What is the LCM of 12 and 36
Karl Marx was a German industrialist. a. True b. False
17 over 50 as a decimal
What is 75% of 4 please help
Who were the gold seekers?
how might orange frogs change because of the red fly