Advent calendar 2016

18 December

The smallest number whose sum of digits is 25.


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


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


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