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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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odd numbers
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Archive
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Most recent collections
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
List of all puzzles
Tags
probabilty
dice
wordplay
geometric mean
quadratics
square grids
factors
consecutive integers
logic
shapes
chess
digital clocks
multiples
perimeter
cryptic clues
means
tangents
albgebra
bases
averages
mean
squares
pascal's triangle
area
coins
median
time
even numbers
cryptic crossnumbers
palindromes
algebra
speed
combinatorics
triangles
dominos
crosswords
expansions
symmetry
numbers
sums
complex numbers
digits
graphs
fractions
integers
games
people maths
the only crossnumber
decahedra
coordinates
determinants
rectangles
factorials
routes
tiling
neighbours
sets
range
indices
prime numbers
axes
proportion
grids
balancing
cube numbers
crossnumbers
integration
rugby
addition
triangle numbers
lines
chocolate
books
spheres
square numbers
surds
number
remainders
calculus
ellipses
tournaments
dodecagons
regular shapes
hexagons
cards
division
circles
perfect numbers
3d shapes
elections
money
arrows
planes
taxicab geometry
2d shapes
dates
gerrymandering
products
cubics
matrices
binary
shape
scales
polygons
trigonometry
sport
folding tube maps
sum to infinity
powers
odd numbers
doubling
angles
chalkdust crossnumber
differentiation
clocks
square roots
star numbers
volume
partitions
polynomials
pentagons
geometric means
multiplication
sequences
parabolas
medians
christmas
probability
quadrilaterals
consecutive numbers
numbers grids
floors
unit fractions
percentages
colouring
advent
digital products
geometry
ave
menace
irreducible numbers
functions
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