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