mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2015

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 2024

Advent calendar 2023

Advent calendar 2022

Advent calendar 2021


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2025