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