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