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Advent calendar 2017
14 December
All 2017 advent puzzles
~
More information
There are
204 squares (of any size) in an 8×8 grid of squares
. Today's number is the number of squares in a 13×13 grid of squares
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819
Tags:
square numbers
,
squares
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coordinates
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area
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the only crossnumber
gerrymandering
addition
logic
clocks
square roots
probabilty
remainders
trigonometry
folding tube maps
floors
books
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number
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algebra
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colouring
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balancing
products
even numbers
irreducible numbers
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pentagons
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spheres
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complex numbers
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partitions
matrices
consecutive integers
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dates
time
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christmas
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integration
lines
grids
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circles
factorials
chalkdust crossnumber
determinants
tiling
advent
volume
perimeter
square numbers
scales
surds
expansions
digits
pascal's triangle
taxicab geometry
people maths
games
ellipses
doubling
sport
star numbers
crosswords
cube numbers
division
chess
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crossnumbers
numbers
triangles
odd numbers
chocolate
quadrilaterals
routes
multiplication
sum to infinity
geometry
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sequences
prime numbers
3d shapes
indices
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dodecagons
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geometric mean
symmetry
cryptic crossnumbers
cryptic clues
percentages
Archive
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▼ show ▼
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Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
Advent calendar 2020
List of all puzzles
Tags
quadratics
indices
graphs
geometry
factorials
menace
coordinates
numbers
lines
geometric mean
tiling
surds
perfect numbers
combinatorics
3d shapes
ave
binary
cube numbers
wordplay
multiplication
logic
remainders
triangle numbers
integers
tournaments
star numbers
colouring
cubics
crossnumber
albgebra
digital products
products
dominos
people maths
even numbers
2d shapes
number
digits
complex numbers
quadrilaterals
division
addition
chess
sport
circles
tangents
money
scales
the only crossnumber
fractions
chalkdust crossnumber
irreducible numbers
rugby
polygons
spheres
partitions
parabolas
crossnumbers
pascal's triangle
polynomials
decahedra
trigonometry
axes
triangles
sets
books
games
time
expansions
cryptic crossnumbers
range
shapes
unit fractions
cryptic clues
dates
folding tube maps
mean
bases
cards
determinants
factors
christmas
routes
median
palindromes
averages
taxicab geometry
pentagons
algebra
matrices
rectangles
prime numbers
consecutive integers
perimeter
volume
sums
shape
squares
symmetry
integration
floors
coins
elections
hexagons
arrows
chocolate
crosswords
digital clocks
dice
sequences
probability
regular shapes
doubling
calculus
means
balancing
square numbers
functions
clocks
percentages
probabilty
grids
odd numbers
differentiation
planes
speed
multiples
angles
consecutive numbers
advent
area
ellipses
sum to infinity
geometric means
proportion
gerrymandering
square roots
dodecagons
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