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Advent calendar 2017
18 December
All 2017 advent puzzles
~
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Today's number is the maximum number of pieces that a (circular) pancake can be cut into with 17 straight cuts.
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154
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Most recent collections
Advent calendar 2025
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List of all puzzles
Tags
area
functions
combinatorics
sport
dominos
triangle numbers
indices
pentagons
medians
tiling
digital products
probabilty
cryptic clues
angles
expansions
factors
elections
averages
partitions
binary
palindromes
square roots
shapes
grids
taxicab geometry
remainders
determinants
star numbers
sums
logic
cube numbers
routes
time
menace
range
prime factors
polynomials
integration
gerrymandering
complex numbers
median
albgebra
christmas
multiplication
hexagons
neighbours
rugby
matrices
dice
sets
cryptic crossnumbers
crossnumbers
square numbers
prime numbers
dodecagons
crosswords
cards
polygons
coordinates
irreducible numbers
even numbers
parabolas
folding tube maps
perfect numbers
multiplaction squares
unit fractions
people maths
square grids
addition
factorials
products
division
digital clocks
sum to infinity
calculus
chalkdust crossnumber
pascal's triangle
3d shapes
triangles
powers
books
money
proportion
consecutive numbers
percentages
spheres
volume
consecutive integers
wordplay
numbers
axes
games
integers
digits
multiples
tournaments
2d shapes
xor
lines
coins
squares
trigonometry
lists
the only crossnumber
graphs
dates
probability
odd numbers
decahedra
bases
regular shapes
tangents
surds
mean
means
shape
chocolate
scales
circles
planes
doubling
ellipses
number
cubics
geometric mean
geometry
sequences
clocks
advent
perimeter
quadrilaterals
ave
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balancing
quadratics
arrows
fractions
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chess
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geometric means
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floors
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