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Advent calendar 2016
22 December
All 2016 advent puzzles
~
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Today's number is a palindrome. Today's number is also the number of palindromes between 111 and 11111 (including 111 and 11111).
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191
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square numbers
parabolas
arrows
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digital products
people maths
chess
dominos
cryptic crossnumbers
spheres
digits
folding tube maps
albgebra
matrices
dates
calculus
indices
time
cubics
doubling
probability
sequences
polygons
prime numbers
surds
bases
colouring
wordplay
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area
coins
percentages
binary
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odd numbers
axes
multiples
taxicab geometry
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numbers
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probabilty
integration
sum to infinity
elections
products
expansions
decahedra
planes
money
proportion
chocolate
perfect numbers
shape
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squares
cryptic clues
floors
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sets
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pascal's triangle
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triangle numbers
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even numbers
speed
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rectangles
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cards
algebra
geometric mean
coordinates
determinants
grids
crossnumber
pentagons
digital clocks
palindromes
advent
triangles
median
differentiation
rugby
regular shapes
symmetry
number
consecutive integers
hexagons
square roots
irreducible numbers
cube numbers
partitions
tangents
star numbers
clocks
quadratics
perimeter
gerrymandering
fractions
complex numbers
logic
integers
lines
factors
chalkdust crossnumber
factorials
graphs
dice
crosswords
routes
the only crossnumber
consecutive numbers
volume
shapes
geometric means
mean
polynomials
means
games
ave
unit fractions
angles
menace
Archive
Show me a random puzzle
▼ show ▼
▲ hide ▲
Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
Advent calendar 2020
List of all puzzles
Tags
star numbers
perimeter
clocks
triangles
partitions
division
geometric mean
factors
money
sums
pascal's triangle
quadratics
multiples
regular shapes
sequences
doubling
graphs
mean
crossnumber
geometric means
range
chalkdust crossnumber
sets
surds
ave
albgebra
unit fractions
trigonometry
lines
proportion
hexagons
algebra
time
complex numbers
combinatorics
floors
polygons
bases
tangents
2d shapes
angles
products
crossnumbers
grids
cubics
shape
sum to infinity
people maths
integers
averages
symmetry
logic
triangle numbers
dice
addition
indices
games
the only crossnumber
square numbers
speed
circles
tiling
volume
shapes
number
chocolate
cards
determinants
3d shapes
coordinates
geometry
calculus
digits
functions
coins
dominos
axes
arrows
sport
probability
rectangles
elections
squares
prime numbers
percentages
polynomials
differentiation
rugby
spheres
consecutive integers
balancing
odd numbers
decahedra
crosswords
even numbers
irreducible numbers
median
books
remainders
advent
tournaments
fractions
colouring
integration
digital products
chess
square roots
gerrymandering
dates
wordplay
taxicab geometry
probabilty
pentagons
cryptic crossnumbers
planes
scales
multiplication
parabolas
numbers
matrices
consecutive numbers
area
christmas
perfect numbers
dodecagons
routes
means
cube numbers
quadrilaterals
expansions
ellipses
cryptic clues
binary
menace
digital clocks
factorials
palindromes
folding tube maps
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