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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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Most recent collections
Advent calendar 2025
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List of all puzzles
Tags
sport
menace
irreducible numbers
geometry
axes
odd numbers
chess
angles
gerrymandering
balancing
quadrilaterals
dates
trigonometry
functions
probability
rectangles
star numbers
elections
neighbours
consecutive numbers
dice
tournaments
pentagons
shapes
calculus
partitions
arrows
polynomials
binary
xor
remainders
integers
unit fractions
spheres
mean
multiplaction squares
triangles
digits
bases
chocolate
ave
2d shapes
cubics
planes
lists
division
crossnumbers
routes
averages
money
graphs
cryptic clues
folding tube maps
advent
square roots
logic
dodecagons
lines
3d shapes
time
volume
coins
speed
even numbers
geometric means
determinants
scales
grids
christmas
area
tiling
factors
hexagons
perimeter
means
pascal's triangle
rugby
square grids
sets
sums
people maths
cards
dominos
circles
medians
multiplication
percentages
number
consecutive integers
integration
regular shapes
proportion
symmetry
tangents
floors
crosswords
median
differentiation
palindromes
triangle numbers
parabolas
cryptic crossnumbers
quadratics
geometric mean
albgebra
taxicab geometry
complex numbers
decahedra
combinatorics
sum to infinity
coordinates
multiples
prime factors
doubling
range
ellipses
products
squares
cube numbers
algebra
games
digital products
probabilty
sequences
books
indices
clocks
chalkdust crossnumber
square numbers
wordplay
shape
factorials
surds
prime numbers
numbers
colouring
the only crossnumber
fractions
perfect numbers
addition
powers
polygons
digital clocks
expansions
matrices
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