User Logophobic

4 votes

$20$ people sit at a round table, how many ways can we choose $3$ with no $2$ being neighbors?

answered Jan 29, 2016 at 0:41

3 votes

Accepted

Minimum elements present in {0, 1, 2, ..., 225} to guarantee triple which sums to 225

answered Feb 6, 2016 at 20:40

3 votes

Finding the number of multiples

answered Feb 12, 2016 at 18:42

3 votes

If $n$ and $m$ are odd integers, show that $ \frac{(nm)^2 -1}8$ is an integer

answered Jan 2, 2016 at 20:42

3 votes

Smallest Circumcircle of Three Triangles

answered Jan 20, 2016 at 19:42

3 votes

Accepted

Common area between Circle and Equilateral triangle

answered Jan 20, 2016 at 20:01

2 votes

Fill a cube with small cubes with different integer side lengths

answered Jan 14, 2016 at 17:55

2 votes

Accepted

Combining an arbitrary number of integers into one s.th. each can be reconstructed

answered Jan 22, 2016 at 14:11

2 votes

Ways to create a quadrilateral by joining vertices of regular polygon with no common side to polygon

answered Jan 28, 2016 at 20:16

2 votes

What number comes next in the sequence $7, 16, 8, 27, 9,...$?

answered Feb 12, 2016 at 19:12

2 votes

Proving that $\lceil x-\lceil y \rceil \rceil =\lfloor \lceil x \rceil - y \rfloor$

answered Feb 15, 2016 at 20:48

2 votes

Accepted

Splitting a set into two disjoint sets five times, minimizing pairs in the same set

answered Feb 2, 2016 at 22:27

2 votes

Accepted

What am I counting wrong?

answered Feb 5, 2016 at 22:40

2 votes

Accepted

Number of Unique Ranks of High Card in Three Card Brag

answered Feb 12, 2016 at 17:18

1 vote

Probability of triangle to be obtuse

answered Apr 6, 2016 at 16:40

1 vote

Switching balls among 3 piles

answered Jan 29, 2016 at 15:24

1 vote

Distinct relative ordering of four consecutive numbers

answered Feb 22, 2016 at 15:08

1 vote

Accepted

Two cards from a pack of $52$ cards are lost.

answered Feb 21, 2016 at 18:33

1 vote

Accepted

Factorising large numbers

answered Feb 22, 2016 at 15:50

1 vote

Question about similar figures

answered Feb 2, 2016 at 19:42

1 vote

Probability of Binary Word Matching

answered Feb 3, 2016 at 17:06

1 vote

Finding the expected value in the given problem.

answered Feb 3, 2016 at 15:39

1 vote

Accepted

Number of $n$-digit permutations with exactly $n-2$ digits smaller than the next

answered Feb 4, 2016 at 16:09

1 vote

disk-disk intersection area

answered Feb 8, 2016 at 20:04

1 vote

Accepted

Find the length of segment in a skew quatrilateral

answered Feb 10, 2016 at 16:20

1 vote

Solving the devil's penny puzzle

answered Feb 11, 2016 at 14:33

1 vote

Throw a fair die repeatedly until I have thrown three sixes

answered Feb 11, 2016 at 19:37

1 vote

Accepted

Probability distribution for score of dice game?

answered Jan 22, 2016 at 19:44

1 vote

Probability of Second ball when two balls are picked from a bin in a set of bins without replacement

answered Jan 23, 2016 at 12:23

1 vote

Erasing numbers from the front of the row

answered Jan 28, 2016 at 20:31

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45 Answers

$20$ people sit at a round table, how many ways can we choose $3$ with no $2$ being neighbors?

Minimum elements present in {0, 1, 2, ..., 225} to guarantee triple which sums to 225

Finding the number of multiples

If $n$ and $m$ are odd integers, show that $ \frac{(nm)^2 -1}8$ is an integer

Smallest Circumcircle of Three Triangles

Common area between Circle and Equilateral triangle

Fill a cube with small cubes with different integer side lengths

Combining an arbitrary number of integers into one s.th. each can be reconstructed

Ways to create a quadrilateral by joining vertices of regular polygon with no common side to polygon

What number comes next in the sequence $7, 16, 8, 27, 9,...$?

Proving that $\lceil x-\lceil y \rceil \rceil =\lfloor \lceil x \rceil - y \rfloor$

Splitting a set into two disjoint sets five times, minimizing pairs in the same set

What am I counting wrong?

Number of Unique Ranks of High Card in Three Card Brag

Probability of triangle to be obtuse

Switching balls among 3 piles

Distinct relative ordering of four consecutive numbers

Two cards from a pack of $52$ cards are lost.

Factorising large numbers

Question about similar figures

Probability of Binary Word Matching

Finding the expected value in the given problem.

Number of $n$-digit permutations with exactly $n-2$ digits smaller than the next

disk-disk intersection area

Find the length of segment in a skew quatrilateral

Solving the devil's penny puzzle

Throw a fair die repeatedly until I have thrown three sixes

Probability distribution for score of dice game?

Probability of Second ball when two balls are picked from a bin in a set of bins without replacement

Erasing numbers from the front of the row