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