mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2016

21 December

Today's number is a multiple of three. The average (mean) of all the answers that are multiples of three is a multiple of 193.
Tags: averages, mean

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2025

Advent calendar 2024

Advent calendar 2023

Advent calendar 2022


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2026