mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

18 December

Today's number is the maximum number of pieces that a (circular) pancake can be cut into with 17 straight cuts.

15 December

If the numbers 1 to 7 are arranged 7,1,2,6,3,4,5 then each number is either larger than or a factor of the number before it.
How many ways can the numbers 1 to 7 be arranged to that each number is either larger than or a factor of the number before it?

Archive

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

Tags

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

Archive

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