mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2023

3 December

190 is the smallest multiple of 10 whose digits add up to 10.
What is the smallest multiple of 15 whose digits add up to 15?

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2024

Advent calendar 2023

Advent calendar 2022

Advent calendar 2021


List of all puzzles

Tags

complex numbers proportion expansions factorials cryptic crossnumbers elections dominos fractions cubics planes trigonometry odd numbers square numbers addition lines square roots christmas shapes calculus ave sums games numbers 3d shapes hexagons neighbours matrices range percentages spheres arrows probability logic multiples functions even numbers money geometric means combinatorics palindromes clocks surds tangents triangles numbers grids doubling unit fractions angles taxicab geometry albgebra geometry cryptic clues menace cube numbers multiplication factors tournaments mean the only crossnumber rectangles balancing geometric mean perimeter squares probabilty sets irreducible numbers folding tube maps axes powers chocolate differentiation shape triangle numbers bases pascal's triangle chalkdust crossnumber star numbers sum to infinity rugby people maths digital products sequences cards symmetry advent routes polygons median digits digital clocks coins algebra consecutive numbers tiling ellipses dates scales binary square grids parabolas chess products speed colouring quadratics coordinates wordplay decahedra time division remainders means integers indices prime numbers area crosswords floors averages consecutive integers graphs medians quadrilaterals gerrymandering crossnumbers dodecagons regular shapes books volume circles 2d shapes perfect numbers integration partitions sport grids dice determinants polynomials number pentagons

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2025