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Pieter21's user avatar
Pieter21's user avatar
Pieter21
  • Member for 8 years, 1 month
  • Last seen more than a month ago
7 votes

"A two-envelopes puzzle"

5 votes

prove that every lossless compression algorithm must result in increasing the file size for some inputs.?

5 votes

Prove that $6$ divides $n^3+11n$?

4 votes
Accepted

Minimum eigenvalue of the difference of two Hermitian matrices

4 votes

Why is $ \sum_{n=0}^{k}|m-n|=\sum_{n=0}^{m}(m-n)+\sum_{n=m}^{k}(n-m)$?

4 votes
Accepted

Prove every graph $G$ has a path with $\delta(G)$ edges.

3 votes
Accepted

How do i use newton's method to calculate the value of 10^1/3 to two decimal place?

3 votes

Proof verification: A $(16,5,8)$ binary code does exist.

3 votes

Factoring the Cubic Equation $2x^3 + x^2 + kx + 6$

3 votes

Binary Relations - Simple Question

3 votes

Sorting a list of points in 2-D clockwise

3 votes

Does $\sin n$ have a maximum value for natural number $n$?

3 votes

How to find x and y coordinates based on the given distance?

3 votes

Matching red and blue points in the plane

3 votes

Number of permutations of the word "PERMUTATION"

3 votes
Accepted

$24$ items randomly placed in $4$ groups

3 votes

In how many bit strings of length 10 are there with no 3 0s adjacent

3 votes

Group of $r$ people at least three people have the same birthday?

3 votes

Convergence of $\sum _{n=1}^{\infty }\:\frac{100\cdot \:101\cdot \:...\cdot \:\left(100+n\right)}{1\cdot 3\cdot ...\cdot \left(2n-1\right)}$

3 votes

Probability that outcome will be familiar given partial familiarity of all possible outcomes.

3 votes

Arrange 15 animals in 15 cages

3 votes

4 maths books and 8 English books

3 votes
Accepted

How to count numbers that contain specific digits

3 votes

If I roll three dice at the same time, how many ways the sides can sum up to $13$?

3 votes
Accepted

Is there a standard convention for deciding when a probability is small enough to be 0%?

3 votes

Integer solutions to nonlinear system of equations $(x+1)^2+y^2 = (x+2)^2+z^2$ and $(x+2)^2+z^2 = (x+3)^2+w^2$

3 votes

Find matrices where $A \neq 0, B \neq C$, but $AB = AC$

3 votes

Car Counting Problem

3 votes

Completing the square of $(m^2 + n^2)$

2 votes
Accepted

Basic combinatorics and working with ordered and unordered lists

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