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