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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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Most recent collections
Advent calendar 2025
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
List of all puzzles
Tags
circles
pentagons
cryptic crossnumbers
dice
crossnumbers
routes
algebra
multiples
balancing
integration
tiling
digital products
area
addition
digital clocks
clocks
graphs
folding tube maps
powers
symmetry
regular shapes
speed
square grids
chocolate
doubling
trigonometry
axes
differentiation
binary
cubics
3d shapes
products
range
grids
colouring
rectangles
chess
calculus
percentages
geometric mean
dates
scales
decahedra
square numbers
unit fractions
functions
proportion
numbers
division
xor
time
games
sport
geometric means
money
prime numbers
lines
ellipses
shapes
complex numbers
sum to infinity
dominos
wordplay
logic
neighbours
spheres
planes
polynomials
prime factors
quadratics
factors
geometry
angles
menace
number
chalkdust crossnumber
advent
the only crossnumber
taxicab geometry
2d shapes
triangles
pascal's triangle
arrows
star numbers
volume
fractions
averages
elections
tangents
hexagons
probabilty
irreducible numbers
bases
medians
gerrymandering
sets
partitions
odd numbers
multiplaction squares
means
shape
combinatorics
tournaments
books
multiplication
quadrilaterals
perimeter
integers
probability
perfect numbers
matrices
factorials
lists
median
indices
ave
surds
remainders
coins
squares
floors
rugby
sums
cryptic clues
polygons
sequences
parabolas
albgebra
crosswords
christmas
determinants
cards
dodecagons
palindromes
consecutive integers
cube numbers
even numbers
people maths
digits
expansions
coordinates
triangle numbers
mean
consecutive numbers
square roots
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