Advent calendar 2016

8 December

Today's number is the second smallest number that can be written as a×b×c×d×e×f×g×h×i, where a,b,...,i are all integers greater than 1.


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


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


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