mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2018

1 December

There are 5 ways to write 4 as the sum of 1s and 2s:
Today's number is the number of ways you can write 12 as the sum of 1s and 2s.

Show answer

Tags: numbers

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2020

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2021