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

the table below shows relative frequencies of players outcomes for two teams one player will be randomly selected to be interviwed​
Which country is nicknamed the emerald isle?
why is it necessary to understand conflict of interest and how it could affect you at work​
3(3x)-2(2x+3)+(-4)=?
Protein synthesis is compared to baking a cake in the textbook, but the process can also be compared to building a doghouse. sondra wanted to build a doghouse a
HELP ASAP What Eastern Chinese city is known as a modern commercial center full of energy and artistic design? (A) Xi’an (B)Shanghai (C)Siberia (D)Guilin
Need help !!!!! ASAP
please help asap! answer should be in polynomial in standard form
WILL GIVE BRAINLIEST! Describe what happens in the rock cycle and use an example to illustrate your explanation.
When you eat you don’t feel that you have overeaten. But after some time you feel it. Give a scientific reason