Eric Tressler's user avatar
Eric Tressler's user avatar
Eric Tressler's user avatar
Eric Tressler
  • Member for 12 years, 1 month
  • Last seen more than a month ago
  • California
50 votes
Accepted

Probability that the sum of 6 dice rolls is even

21 votes

Why are two planes parallel to the same line not necessarily parallel?

12 votes

Find the sum of all 4-digit numbers formed by using digits 0, 2, 3, 5 and 8?

12 votes
Accepted

How many 32-bit strings have fewer 1s than 0s?

11 votes

Why is it more efficient to compute the modular exponentiation by calculating to the power of two and not three for example?

8 votes
Accepted

Funny(?) Probability Problem

6 votes

Write $0.2154154\overline{154}$ as a fraction

6 votes
Accepted

Factor $x^6 +5x^3 +8$

5 votes
Accepted

Yet Another Monty Hall Question - Please advise if alternative scenario proves the same principle

5 votes

Probability that two cards are black and one is red

4 votes
Accepted

An incorrect proof by exhaustion

4 votes
Accepted

Marbles and boxes

4 votes
Accepted

Find an example where the random variables $X_1,X_2,X_3$ are pairwise independent, but not all together.

4 votes
Accepted

Perfect matching problem

4 votes
Accepted

The set of all the rotations of a plane around multiple points contained in it doesn't form a group.

4 votes
Accepted

Two players and three spinners game probability question

4 votes

Problem understanding the concept of a union

4 votes
Accepted

Why does order matter when two dice are rolled?

4 votes
Accepted

An elevator containing five people can stop at any of seven floors.

3 votes
Accepted

Probability of reaching a path

3 votes
Accepted

Why can't we use $E \le 3V - 6$ to prove that $K_{3,3}$ is nonplanar?

3 votes
Accepted

What is the maximum length of a non-repeating word on $n$ letters?

3 votes

What part of digraphs are posets?

3 votes

How do I solve this kind of sigma notation problem?

3 votes

Random walk returning probability

3 votes
Accepted

rotate graph of function by 180

3 votes

Flawed proof that all positive integers are equal

3 votes
Accepted

How do I create a sigmoid-esque function with the following properties?

2 votes

Does $x = \left(x + \frac {(y - x)} 2\right)$ go on forever?

2 votes

Prove that for any graph G, there are at least $\chi(G)$ vertices with $degree\geq \chi(G)$ − 1.