Advent calendar 2018

9 December

Today's number is the number of numbers between 10 and 1,000 that contain no 0, 1, 2 or 3.

Show answer


Show me a random puzzle
 Most recent collections 

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

List of all puzzles


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


Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2020