mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2016

14 December

In July, I posted the Combining Multiples puzzle.
Today's number is the largest number that cannot be written in the form \(27a+17b\), where \(a\) and \(b\) are positive integers (or 0).

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2023

Advent calendar 2022

Advent calendar 2021

Advent calendar 2020


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2024