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