Advent calendar 2018

15 December

Today's number is smallest three digit palindrome whose digits are all non-zero, and that is not divisible by any of its digits.

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


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


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