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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
Show me a random puzzle
▼ show ▼
▲ hide ▲
Most recent collections
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
List of all puzzles
Tags
area
probability
functions
unit fractions
coordinates
consecutive numbers
integers
powers
scales
logic
remainders
elections
square grids
ellipses
triangle numbers
pascal's triangle
square roots
wordplay
colouring
sum to infinity
graphs
quadratics
multiples
games
irreducible numbers
pentagons
angles
square numbers
perimeter
hexagons
crosswords
surds
numbers
dominos
dice
shape
mean
perfect numbers
cards
calculus
palindromes
albgebra
shapes
prime numbers
planes
folding tube maps
factors
geometry
integration
factorials
quadrilaterals
cryptic crossnumbers
chess
3d shapes
volume
complex numbers
multiplication
speed
dodecagons
binary
neighbours
bases
combinatorics
doubling
sequences
polygons
tiling
averages
geometric means
geometric mean
taxicab geometry
odd numbers
chalkdust crossnumber
median
probabilty
indices
differentiation
percentages
numbers grids
decahedra
cube numbers
means
advent
products
even numbers
spheres
partitions
grids
balancing
books
digits
addition
people maths
rectangles
menace
fractions
time
cryptic clues
digital products
symmetry
range
regular shapes
crossnumbers
tournaments
the only crossnumber
money
squares
proportion
star numbers
determinants
sport
routes
axes
polynomials
medians
sums
dates
arrows
algebra
2d shapes
chocolate
matrices
consecutive integers
christmas
number
division
sets
clocks
gerrymandering
coins
expansions
digital clocks
cubics
floors
trigonometry
triangles
parabolas
tangents
circles
ave
lines
rugby
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