Showing what's behind the curtain

Integer partition equations

The prime factorisation of binomial coefficients

Comparing four-sided and six-sided dice

Find the sum of the distinct square-free numbers in the first 51 rows of Pascal’s triangle.

Find the unique positive integer for a concealed square.

Skew-cost coding

Tribonacci non-divisors

Odd triplets in Pascal’s triangle.

Find fractions that cannot be cancelled down (resilient fraction).

Prime Subset Sums