mscroggs.co.uk
mscroggs.co.uk

subscribe

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.

Archive

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

Tags

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

Archive

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