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