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