Which values can be expressed by a linear coin combination
29084
Largest integer that can't be represented as a non-negative linear combination of $m, n = mn - m - n$? Why?
115552
Check whether a coin is fair
41256
Variance of a linear combination of vectors
136037
${n\choose 2} - {k\choose 2} = {n-k\choose 2} +k(n-k)$ Marked box or unmarked box
2687
How do I compute the discrete valuation of the sum of two elements
25989
How to determine the number of coin tosses to identify one biased coin from another?
11614
The case of the missing ninth of a $2$€ coin
56528
On the proof of existence and uniqueness of radix representation
39957
Product of binomial coefficient as a basis
87999
Product Notation for Multiplication in Reverse Order
40619
How to write down a vector as a linear combination of other 4 vectors?
130083
Evaluating sum of a combination series
75831
Inconsistency in divide-by-zero behavior between different value types
121605
A coin tossing game which leads to a contradiction
102816
multiplication equivalent of the summation symbol
92147
Coin sequence paradox from Martin Gardner's book
67899
Integer squares of the form $x^4+x^3+x^2+x+1$