Q1026 (Q1026): Difference between revisions

From ArqMath20

Jump to navigation Jump to search

← Older edit

Revision as of 10:16, 29 April 2020 Scharpf (talk | contribs) 311 edits ‎Created claim: relevant answers (P14): 3082361 ← Older edit		Latest revision as of 10:17, 29 April 2020 Scharpf (talk | contribs) 311 edits ‎Changed claim: relevant answers (P14): 3083261
Property / relevant answers		Property / relevant answers
	3082361		3083261

---

Latest revision as of 10:17, 29 April 2020

No description defined

Language	Label	Description	Also known as
English	No label defined	No description defined

Statements

topic-id

B.4

0 references

math-stackexchange-category

combinatorics

0 references

number-theory

0 references

summation

0 references

proof-explanation

0 references

arqmath formula id

q_22

0 references

post type

Question

0 references

math stackexcange post id

3083227

0 references

relevant answers

3083261

Defining formula

${\displaystyle \sum _{k=0}^{n}k{\binom {n}{k}}=\sum _{k=1}^{n-1}k{\binom {n}{k}}+n=\sum _{k=1}^{n-1}n{\binom {n-1}{k-1}}+n=n\sum _{k=0}^{n-1}{\binom {n-1}{k}}=n2^{n-1}}$

0 references

 

Sitelinks

Wikipedia(0 entries)

Retrieved from "https://arq20.formulasearchengine.com/index.php?title=Item:Q1026&oldid=4459"