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