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Advent calendar 2017
14 December
All 2017 advent puzzles
~
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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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Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
Advent calendar 2020
List of all puzzles
Tags
books
axes
proportion
sequences
geometric means
trigonometry
volume
graphs
cryptic crossnumbers
geometry
division
gerrymandering
people maths
cubics
matrices
complex numbers
median
dodecagons
folding tube maps
integration
bases
tangents
christmas
albgebra
doubling
digital products
even numbers
cryptic clues
square roots
money
prime numbers
digital clocks
time
3d shapes
probabilty
remainders
angles
crossnumbers
partitions
digits
factors
algebra
rugby
quadrilaterals
fractions
products
combinatorics
menace
circles
elections
balancing
scales
sum to infinity
coins
triangles
arrows
quadratics
the only crossnumber
crossnumber
decahedra
multiples
number
probability
sums
regular shapes
numbers
star numbers
advent
perimeter
averages
shape
tournaments
colouring
cube numbers
differentiation
addition
routes
ave
spheres
geometric mean
parabolas
triangle numbers
multiplication
surds
cards
clocks
2d shapes
mean
shapes
palindromes
functions
lines
polygons
wordplay
expansions
consecutive integers
chalkdust crossnumber
taxicab geometry
area
calculus
games
polynomials
consecutive numbers
sport
range
planes
odd numbers
crosswords
floors
squares
factorials
binary
pascal's triangle
pentagons
indices
percentages
perfect numbers
sets
ellipses
hexagons
dominos
coordinates
unit fractions
chess
chocolate
means
irreducible numbers
integers
determinants
logic
speed
dates
dice
tiling
square numbers
rectangles
symmetry
grids
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