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