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