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Advent calendar 2016
14 December
All 2016 advent puzzles
~
More information
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).
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415
Tags:
numbers
,
factors
,
multiples
,
sums
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Most recent collections
Advent calendar 2024
Advent calendar 2023
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List of all puzzles
Tags
2d shapes
volume
dates
axes
polygons
surds
symmetry
chalkdust crossnumber
quadratics
people maths
cryptic crossnumbers
triangles
mean
geometric means
pentagons
bases
sport
rugby
chess
cube numbers
powers
factorials
tournaments
3d shapes
grids
clocks
probabilty
squares
shape
range
rectangles
sets
matrices
games
balancing
trigonometry
ellipses
angles
addition
consecutive integers
indices
functions
square numbers
neighbours
chocolate
square roots
remainders
coins
geometry
averages
multiplication
even numbers
menace
palindromes
digits
doubling
scales
ave
cards
complex numbers
probability
coordinates
consecutive numbers
perimeter
circles
median
dominos
logic
speed
wordplay
dice
the only crossnumber
geometric mean
combinatorics
hexagons
folding tube maps
polynomials
digital clocks
tangents
parabolas
planes
proportion
advent
elections
determinants
percentages
money
tiling
multiples
triangle numbers
spheres
binary
factors
unit fractions
prime numbers
number
area
numbers
lines
books
differentiation
time
sums
sum to infinity
calculus
products
christmas
cryptic clues
cubics
integers
perfect numbers
arrows
partitions
taxicab geometry
odd numbers
colouring
integration
regular shapes
sequences
gerrymandering
expansions
shapes
crosswords
crossnumbers
star numbers
pascal's triangle
digital products
division
means
floors
square grids
medians
numbers grids
dodecagons
routes
algebra
fractions
quadrilaterals
irreducible numbers
decahedra
graphs
albgebra
© Matthew Scroggs 2012–2025