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