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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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List of all puzzles
Tags
circles
arrows
christmas
parabolas
rectangles
factorials
area
percentages
median
clocks
differentiation
square grids
folding tube maps
the only crossnumber
balancing
spheres
floors
integration
means
combinatorics
probability
palindromes
geometric means
pascal's triangle
range
symmetry
geometry
money
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3d shapes
chess
cards
multiplication
multiples
gerrymandering
elections
ave
algebra
square roots
scales
crossnumbers
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colouring
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routes
perfect numbers
even numbers
planes
quadrilaterals
unit fractions
consecutive numbers
polynomials
doubling
division
mean
expansions
functions
number
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xor
angles
determinants
integers
regular shapes
albgebra
square numbers
2d shapes
decahedra
books
sets
prime numbers
coins
dice
sums
games
lines
chocolate
wordplay
time
lists
coordinates
perimeter
cryptic clues
factors
multiplaction squares
fractions
numbers
digital products
shapes
cubics
hexagons
matrices
grids
geometric mean
remainders
people maths
complex numbers
rugby
squares
powers
calculus
pentagons
neighbours
irreducible numbers
ellipses
logic
probabilty
volume
sequences
medians
surds
proportion
axes
chalkdust crossnumber
triangle numbers
tangents
crosswords
trigonometry
graphs
sum to infinity
dates
taxicab geometry
products
binary
dominos
odd numbers
indices
consecutive integers
polygons
cube numbers
partitions
quadratics
addition
star numbers
sport
shape
menace
dodecagons
tournaments
speed
averages
digital clocks
cryptic crossnumbers
triangles
tiling
© Matthew Scroggs 2012–2026