Advent calendar 2019

1 December

If you write out the numbers from 1 to 1000 (inclusive), how many times will you write the digit 1?

Show answer


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


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


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