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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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Most recent collections
Advent calendar 2025
Advent calendar 2024
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List of all puzzles
Tags
money
range
speed
dominos
ave
graphs
grids
clocks
cube numbers
consecutive numbers
division
triangle numbers
polygons
multiplication
palindromes
square numbers
trigonometry
combinatorics
median
rugby
floors
complex numbers
chalkdust crossnumber
factorials
powers
geometric means
cubics
geometric mean
wordplay
pascal's triangle
remainders
xor
coordinates
square roots
square grids
sequences
differentiation
doubling
odd numbers
dates
cryptic clues
unit fractions
digits
probability
digital products
shapes
percentages
elections
area
symmetry
polynomials
angles
dice
perfect numbers
3d shapes
triangles
expansions
cryptic crossnumbers
indices
squares
coins
determinants
integration
matrices
crosswords
quadrilaterals
taxicab geometry
functions
multiplaction squares
decahedra
tournaments
medians
geometry
scales
shape
folding tube maps
time
bases
cards
menace
arrows
planes
rectangles
circles
parabolas
crossnumbers
regular shapes
tiling
chocolate
surds
albgebra
balancing
2d shapes
logic
routes
star numbers
games
advent
even numbers
the only crossnumber
spheres
hexagons
consecutive integers
fractions
sums
algebra
digital clocks
averages
sets
christmas
chess
volume
irreducible numbers
numbers
addition
dodecagons
quadratics
sum to infinity
integers
tangents
lines
probabilty
number
multiples
books
perimeter
products
binary
calculus
pentagons
means
lists
prime factors
colouring
proportion
gerrymandering
partitions
neighbours
sport
factors
people maths
ellipses
mean
prime numbers
axes
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