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