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Mathematics
Culver Kwan's user avatar
Culver Kwan's user avatar
Culver Kwan's user avatar
Culver Kwan
  • Member for 5 years, 2 months
  • Last seen more than a week ago
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answers
29
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About

I am a male.

I am Culver Kwan and I like Maths. I am very happy that we can interact about maths on this website! And also other topics.

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9
Posts
13
Posts %
63
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8
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11
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12
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19
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9
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7
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10
Posts %
9
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6
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9
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9
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4
Posts
6
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Top posts
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answer
56
How many ways can I go from 1 to 10 in the following diagram?
Aug 27, 2019
question
15
An interesting algorithm about prime numbers that I thought today
Aug 14, 2019
question
10
How can I prove that starting from $0$, and repeatedly taking $+10,-10,\times10$ or $\div10$, requires at least $9$ operations to get to $2019$?
Jul 15, 2019
question
8
I am learning functional equation and encountered $f(f(x)-x)=x$.
Aug 30, 2019
answer
6
Show that three points lie on the same line
May 7, 2020
answer
6
Find values of $x$ so that the matrix is invertible
Jul 13, 2019
answer
5
A ratio of red beads to black is $r:b=4:3$. Why doesn't this translate to $4r=3b$ instead of $3r=4b$?
Jun 22, 2020
question
5
Who has the winning strategy for the game?
Aug 5, 2019
question
5
Find all two-digits $N$ for which the sum of the digits of $10^N-N$ is divisible by $170$.
Aug 9, 2019
answer
5
If $a>0$ and $(x+1)(x+2)(x+3)(x+4)+1=(ax^2+bx+c)^2$, then find the value of $a+b+c$
Aug 7, 2019
Top Meta posts
6
2
6
A math question with lot of views but why?
5
Why did a moderator remove my question from HNQ?
4
Actually, when does the computer give an audit?
3
How could a user with a single point cast votes?
3
Requests for Reopen & Undeletion Votes (volume 07/2018 - 12/2020)
Top network posts
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39
9-5=5? Matchstick problem
26
Can you put L trominos to fill the figure?
21
Boys and girls in a circle
20
Keys and Locks Puzzle
20
n(n+1) as a multiple of 100