SOLUTION: Theorem 1.11 states that: (𝑛 choose 𝑟) = (𝑛 − 1 choose 𝑟) + (𝑛 − 1 choose 𝑟 − 1). Use factorials to prove this t
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Question 1065679: Theorem 1.11 states that: (𝑛 choose 𝑟) = (𝑛 − 1 choose 𝑟) + (𝑛 − 1 choose 𝑟 − 1). Use factorials to prove this theorem.
Answer by ikleyn(52780) (Show Source): You can put this solution on YOUR website!
.
See the lesson
- Binomial Theorem, Binomial Formula, Binomial Coefficients and Binomial Expansion
in this site.
Same identity, slightly different designation for indexes.
Also, you have this free of charge online textbook in ALGEBRA-II in this site
- ALGEBRA-II - YOUR ONLINE TEXTBOOK.
The referred lesson is the part of this textbook under the topic
"Binomial expansion, binomial coefficients, Pascal's triangle".
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