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Advent calendar 2016
1 December
All 2016 advent puzzles
~
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One of the digits of today's number was removed to leave a two digit number. This two digit number was added to today's number. The result was 619.
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563
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Advent calendar 2025
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List of all puzzles
Tags
square numbers
area
hexagons
routes
algebra
proportion
pascal's triangle
3d shapes
dice
digital products
decahedra
dodecagons
shape
combinatorics
circles
multiples
crosswords
people maths
cube numbers
lists
sums
angles
sequences
volume
folding tube maps
chalkdust crossnumber
averages
planes
sum to infinity
division
pentagons
star numbers
medians
fractions
rectangles
cryptic clues
christmas
rugby
polygons
graphs
speed
balancing
sets
consecutive integers
irreducible numbers
binary
clocks
consecutive numbers
palindromes
trigonometry
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square grids
probabilty
elections
shapes
partitions
spheres
geometric means
the only crossnumber
powers
median
grids
numbers
money
chess
geometric mean
factorials
advent
integration
axes
cryptic crossnumbers
tiling
gerrymandering
lines
probability
means
crossnumbers
cubics
multiplaction squares
scales
number
books
symmetry
factors
complex numbers
ellipses
indices
sport
tournaments
squares
games
matrices
triangles
time
square roots
menace
neighbours
bases
logic
dates
unit fractions
mean
integers
xor
regular shapes
taxicab geometry
surds
digital clocks
polynomials
coordinates
wordplay
differentiation
arrows
albgebra
prime factors
remainders
addition
tangents
parabolas
digits
even numbers
cards
expansions
products
determinants
calculus
ave
functions
dominos
range
2d shapes
triangle numbers
odd numbers
floors
perfect numbers
prime numbers
quadratics
percentages
chocolate
perimeter
doubling
multiplication
colouring
coins
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