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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
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numbers
,
factors
,
multiples
,
sums
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Archive
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▼ show ▼
▲ hide ▲
Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
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List of all puzzles
Tags
digital products
remainders
sum to infinity
arrows
area
products
cryptic crossnumbers
determinants
routes
2d shapes
cryptic clues
geometry
percentages
polynomials
squares
perfect numbers
3d shapes
means
grids
probabilty
rectangles
floors
expansions
square roots
functions
tiling
sums
number
coordinates
digits
money
crosswords
star numbers
shapes
shape
graphs
regular shapes
advent
cube numbers
planes
odd numbers
algebra
axes
spheres
dice
doubling
clocks
tangents
quadrilaterals
complex numbers
factorials
triangles
multiplication
sequences
probability
books
rugby
division
polygons
dominos
taxicab geometry
scales
range
bases
square numbers
irreducible numbers
trigonometry
chalkdust crossnumber
median
christmas
prime numbers
folding tube maps
balancing
ave
triangle numbers
volume
mean
geometric mean
cards
lines
symmetry
averages
quadratics
proportion
logic
calculus
surds
perimeter
factors
pentagons
colouring
combinatorics
ellipses
binary
consecutive numbers
addition
integers
chess
the only crossnumber
dates
integration
partitions
gerrymandering
crossnumber
elections
crossnumbers
dodecagons
chocolate
tournaments
numbers
pascal's triangle
parabolas
palindromes
even numbers
circles
sport
albgebra
cubics
people maths
sets
matrices
consecutive integers
speed
decahedra
digital clocks
geometric means
unit fractions
wordplay
multiples
angles
time
menace
fractions
indices
coins
hexagons
differentiation
games
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