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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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numbers
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palindromes
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doubling
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integers
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Most recent collections
Advent calendar 2025
Advent calendar 2024
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List of all puzzles
Tags
elections
calculus
area
multiplaction squares
prime numbers
mean
geometric means
consecutive numbers
taxicab geometry
crosswords
square grids
factorials
balancing
multiplication
sums
triangles
christmas
advent
logic
dates
floors
2d shapes
partitions
chocolate
medians
remainders
coins
matrices
rugby
indices
probabilty
perimeter
functions
routes
division
books
digital products
regular shapes
consecutive integers
ave
axes
people maths
arrows
speed
shapes
triangle numbers
squares
chess
star numbers
albgebra
quadratics
folding tube maps
neighbours
gerrymandering
surds
products
geometric mean
differentiation
fractions
tiling
lines
games
shape
perfect numbers
doubling
bases
rectangles
volume
odd numbers
dominos
pentagons
quadrilaterals
square roots
coordinates
irreducible numbers
palindromes
circles
xor
time
averages
spheres
money
trigonometry
integers
tournaments
colouring
3d shapes
median
expansions
integration
menace
cubics
decahedra
sets
determinants
polynomials
chalkdust crossnumber
clocks
pascal's triangle
cube numbers
unit fractions
percentages
sport
the only crossnumber
multiples
cards
hexagons
polygons
crossnumbers
complex numbers
scales
prime factors
planes
grids
square numbers
factors
dodecagons
number
algebra
powers
proportion
graphs
sequences
lists
angles
digits
addition
means
digital clocks
cryptic clues
sum to infinity
even numbers
binary
geometry
wordplay
combinatorics
range
tangents
numbers
parabolas
symmetry
cryptic crossnumbers
dice
probability
ellipses
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