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Advent calendar 2017
14 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 squares in a 13×13 grid of squares
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819
Tags:
square numbers
,
squares
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quadratics
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numbers grids
tangents
median
balancing
calculus
grids
shape
volume
the only crossnumber
taxicab geometry
lines
trigonometry
digits
cards
logic
proportion
fractions
sport
folding tube maps
range
2d shapes
probability
factors
products
number
division
decahedra
bases
perimeter
square roots
coins
percentages
digital products
time
partitions
scales
sets
ellipses
menace
triangles
rectangles
dice
games
albgebra
probabilty
differentiation
remainders
arrows
graphs
functions
consecutive numbers
square numbers
mean
cryptic crossnumbers
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cryptic clues
binary
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means
colouring
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symmetry
integration
angles
palindromes
squares
people maths
dominos
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matrices
cube numbers
regular shapes
area
prime numbers
crossnumbers
axes
shapes
doubling
circles
clocks
sums
indices
algebra
digital clocks
multiples
money
advent
pentagons
sum to infinity
pascal's triangle
geometric mean
crosswords
sequences
cubics
chocolate
quadrilaterals
square grids
surds
books
triangle numbers
geometric means
factorials
elections
gerrymandering
hexagons
chess
rugby
dates
dodecagons
polynomials
integers
combinatorics
crossnumber
addition
consecutive integers
averages
unit fractions
planes
routes
complex numbers
perfect numbers
geometry
star numbers
spheres
floors
parabolas
multiplication
polygons
expansions
speed
chalkdust crossnumber
wordplay
irreducible numbers
powers
tournaments
ave
medians
christmas
tiling
Archive
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Most recent collections
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
List of all puzzles
Tags
tangents
2d shapes
triangle numbers
regular shapes
ellipses
clocks
palindromes
sets
functions
polynomials
sequences
circles
percentages
averages
consecutive integers
square numbers
means
powers
star numbers
coins
digits
cryptic clues
cryptic crossnumbers
crossnumbers
factors
grids
algebra
range
colouring
number
the only crossnumber
addition
multiples
logic
tiling
cubics
trigonometry
rugby
chalkdust crossnumber
quadratics
numbers
proportion
cards
probability
decahedra
chess
menace
arrows
dominos
crosswords
surds
neighbours
rectangles
scales
consecutive numbers
games
square grids
prime numbers
multiplication
bases
albgebra
determinants
factorials
median
geometry
pascal's triangle
sport
medians
complex numbers
ave
numbers grids
shapes
3d shapes
expansions
calculus
binary
even numbers
routes
gerrymandering
angles
christmas
spheres
money
books
symmetry
crossnumber
mean
partitions
cube numbers
doubling
elections
integers
polygons
remainders
digital clocks
squares
hexagons
sums
folding tube maps
balancing
fractions
products
coordinates
floors
quadrilaterals
area
lines
sum to infinity
time
pentagons
speed
graphs
advent
triangles
probabilty
axes
dice
tournaments
chocolate
geometric mean
parabolas
planes
odd numbers
integration
wordplay
square roots
digital products
geometric means
perimeter
unit fractions
irreducible numbers
people maths
shape
dates
differentiation
indices
dodecagons
taxicab geometry
perfect numbers
volume
combinatorics
matrices
division
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