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

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

Archive

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