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