Advent calendar 2019

14 December

During one day, a digital clock shows times from 00:00 to 23:59. How many times during the day do the four digits shown on the clock add up to 14?

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


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


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