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