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Advent calendar 2017
11 December
All 2017 advent puzzles
~
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Two more than today's number is the reverse of two times today's number.
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497
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Most recent collections
Advent calendar 2025
Advent calendar 2024
Advent calendar 2023
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List of all puzzles
Tags
games
remainders
surds
geometry
prime factors
regular shapes
numbers
range
square numbers
trigonometry
taxicab geometry
sums
rugby
pentagons
dodecagons
consecutive numbers
arrows
the only crossnumber
grids
integration
triangles
crossnumbers
cryptic crossnumbers
floors
people maths
coins
colouring
gerrymandering
3d shapes
number
sum to infinity
determinants
multiples
folding tube maps
wordplay
pascal's triangle
crosswords
rectangles
consecutive integers
averages
planes
complex numbers
square roots
perfect numbers
means
cards
calculus
shapes
irreducible numbers
elections
percentages
decahedra
triangle numbers
cryptic clues
chocolate
probabilty
digits
christmas
circles
products
binary
dice
unit fractions
factorials
multiplication
perimeter
geometric mean
angles
lists
coordinates
expansions
time
hexagons
menace
matrices
integers
parabolas
money
sets
digital products
xor
partitions
logic
medians
even numbers
proportion
squares
tournaments
axes
neighbours
multiplaction squares
dates
sequences
area
mean
symmetry
lines
median
division
probability
digital clocks
factors
albgebra
algebra
square grids
advent
clocks
cube numbers
functions
volume
fractions
bases
dominos
chess
doubling
quadratics
scales
sport
balancing
books
spheres
star numbers
shape
2d shapes
speed
combinatorics
cubics
chalkdust crossnumber
polygons
routes
prime numbers
odd numbers
tiling
graphs
indices
palindromes
polynomials
powers
ave
tangents
differentiation
addition
quadrilaterals
geometric means
ellipses
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