Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

  7. current community

    your communities

    more stack exchange communities

    company blog
Mathematics
Meta user
Network profile
3,571
reputation
2
14
31

Kevin Long

A graduate mathematics student. That's it.

189
answers
13
questions
~46k
people reached
  • District of Columbia
  • Member for 3 years, 7 months
  • 559 profile views
  • Last seen May 13 at 23:30

Communities (6)

Top Meta Posts
5
0

Top network posts

Top tags (103)

Score 72
Posts 62
Posts % 31
Score 29
Posts 33
Score 26
Posts 20
Score 21
Posts 22
Score 21
Posts 22
Score 18
Posts 15
View all tags →

Top posts (202) All Questions Answers | Votes Newest

24 Set builder notation: Colon or Vertical Line Oct 28 '15
20 Average distance from center of circle Nov 29 '18
10 Total number of integers relatively prime to $p^2$ Apr 26 '16
6 Problem from a graph theory book Mar 20 '18
5 How can I prove $R^T\ ;R^T$ is transitive if $R$ is transitive. Oct 30 '15
5 How to prove $ \sum_{k=3}^n \binom nk \binom k3 =\binom n3 2^{n-3} $ Jan 12 '17
4 Words formed from NUMBER with N to the left of U Dec 20 '16
4 Evaluate the sum $ 22\binom{26}{0} + 21\binom{26}{1} + 20\binom{26}{2} + \cdots + (-3)\binom{26}{25} + (-4)\binom{26}{26}. $ Oct 7 '16
4 $4$ dogs have been born in the same week. What is the probability that they were born on different days? Oct 19 '16
4 How many $4$ digit numbers can be made with exactly $3$ digits the same? Oct 3 '17
View all questions and answers →

Badges (47)

Gold

2

Rarest

Silver

14

Rarest

Bronze

31

Rarest

View all badges →