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