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