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Apr
27
answered Interesting puzzle about a sphere and some circles
Apr
18
answered A sum involving powers of binomial coefficients.
Mar
28
answered How would you mathematically represent the master key and 'slave lock' model?
Mar
26
answered Line-circle intersection in spherical geometry?
Mar
20
answered A problem about the ratio of atoms
Mar
17
answered How many roots lie in the interval $(0,1)$?
Mar
11
answered Number of ways to pair 2n elements from two different sets
Mar
7
answered How many ways can $n$ adults, $k_1$ boys and $k_2$ girls be seated in a line such that no two children of the same sex sit next to each other?
Mar
5
answered Mollweide's formula : A proof
Feb
29
answered How do you solve this simple logarithm problem?
Feb
21
answered What is the minimum number of friends Sally can have if she can invite a different group of friends to her house every night for a year?
Feb
14
answered What's the expected value in this jackpot winning experiment.
Feb
14
answered Probability of getting a pair in Texas Hold'em poker
Feb
4
answered Optimization Puzzle
Feb
1
answered How to compute Shannon information?
Jan
31
answered Perfect Squares ending in 576
Jan
13
answered Is there an efficient algorithm to find a length maximizing combination?
Jan
9
answered Numerically Efficient Approximation of cos(s)
Jan
2
answered Finding an appropriate axis of rotation for two points such that they can be rotated and translated to overlay a given line
Dec
17
answered Approximate $n$ grade Bézier through cubic and/or quadratic Bézier curves