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Advent calendar 2017
16 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 rectangles (of any size) in a 2×19 grid of squares
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570
Tags:
square numbers
,
squares
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3d shapes
unit fractions
geometric means
tiling
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proportion
routes
cubics
symmetry
chalkdust crossnumber
consecutive numbers
tournaments
prime numbers
arrows
2d shapes
sequences
chocolate
perfect numbers
clocks
speed
functions
dates
factorials
doubling
division
trigonometry
cards
number
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sport
floors
triangles
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averages
lines
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sums
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crosswords
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triangle numbers
partitions
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albgebra
circles
crossnumbers
squares
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time
odd numbers
ave
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dominos
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digits
addition
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tangents
algebra
rectangles
ellipses
multiples
pascal's triangle
grids
menace
sum to infinity
range
rugby
folding tube maps
logic
cryptic clues
probability
square grids
taxicab geometry
fractions
mean
graphs
cube numbers
probabilty
geometric mean
regular shapes
volume
complex numbers
balancing
people maths
perimeter
integration
median
combinatorics
angles
spheres
axes
palindromes
differentiation
books
quadratics
cryptic crossnumbers
hexagons
even numbers
scales
advent
polynomials
medians
shape
integers
sets
dodecagons
wordplay
chess
planes
irreducible numbers
star numbers
quadrilaterals
the only crossnumber
means
matrices
consecutive integers
area
powers
surds
indices
calculus
games
christmas
decahedra
square numbers
neighbours
colouring
multiplication
pentagons
Archive
Show me a random puzzle
▼ show ▼
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Most recent collections
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
List of all puzzles
Tags
decahedra
2d shapes
square grids
balancing
averages
folding tube maps
geometry
dodecagons
scales
percentages
median
numbers grids
area
regular shapes
sum to infinity
crosswords
cubics
books
axes
cryptic clues
pentagons
elections
even numbers
indices
routes
ave
matrices
dice
symmetry
perfect numbers
quadrilaterals
chess
cryptic crossnumbers
palindromes
algebra
gerrymandering
cube numbers
chalkdust crossnumber
calculus
probabilty
doubling
sets
binary
means
wordplay
irreducible numbers
graphs
dominos
tangents
taxicab geometry
perimeter
parabolas
division
triangles
consecutive numbers
albgebra
menace
mean
coordinates
chocolate
consecutive integers
crossnumbers
triangle numbers
combinatorics
number
differentiation
cards
planes
the only crossnumber
hexagons
spheres
integers
logic
square roots
digital clocks
time
grids
volume
pascal's triangle
bases
factorials
multiplication
factors
powers
functions
geometric mean
polynomials
numbers
money
square numbers
integration
floors
unit fractions
trigonometry
neighbours
addition
sums
ellipses
star numbers
digital products
rectangles
shapes
rugby
squares
advent
coins
medians
dates
proportion
tiling
sequences
tournaments
angles
digits
games
geometric means
prime numbers
partitions
arrows
determinants
people maths
clocks
multiples
complex numbers
surds
3d shapes
probability
christmas
circles
lines
range
colouring
sport
shape
odd numbers
remainders
polygons
quadratics
expansions
fractions
products
speed
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