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