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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
Show me a random puzzle
▼ show ▼
▲ hide ▲
Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
Advent calendar 2020
List of all puzzles
Tags
arrows
digital clocks
people maths
lines
indices
probabilty
elections
rugby
consecutive numbers
quadrilaterals
the only crossnumber
shapes
geometric means
parabolas
tiling
digital products
range
cubics
area
factorials
irreducible numbers
routes
regular shapes
differentiation
quadratics
complex numbers
doubling
planes
bases
square roots
menace
consecutive integers
gerrymandering
combinatorics
prime numbers
chess
dodecagons
polynomials
squares
3d shapes
shape
grids
coins
polygons
percentages
clocks
pascal's triangle
sequences
floors
products
binary
advent
tangents
time
surds
numbers
square numbers
multiples
partitions
sums
cryptic crossnumbers
rectangles
digits
remainders
averages
symmetry
perfect numbers
2d shapes
integers
logic
angles
circles
odd numbers
taxicab geometry
crossnumber
functions
axes
star numbers
cards
colouring
probability
dates
number
spheres
means
folding tube maps
trigonometry
cube numbers
ellipses
decahedra
perimeter
multiplication
cryptic clues
chocolate
hexagons
calculus
factors
geometry
unit fractions
scales
mean
sets
integration
ave
coordinates
graphs
albgebra
sum to infinity
fractions
pentagons
algebra
palindromes
chalkdust crossnumber
median
games
volume
triangles
money
christmas
addition
wordplay
geometric mean
crossnumbers
determinants
expansions
matrices
triangle numbers
proportion
even numbers
sport
balancing
dominos
tournaments
books
dice
speed
crosswords
division
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