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Advent calendar 2016
21 December
All 2016 advent puzzles
~
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Today's number is a multiple of three. The average (mean) of all the answers that are multiples of three is a multiple of 193.
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816
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averages
,
mean
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ave
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scales
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folding tube maps
palindromes
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star numbers
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xor
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advent
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the only crossnumber
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lines
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angles
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integers
planes
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chocolate
dodecagons
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complex numbers
people maths
doubling
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odd numbers
consecutive 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
area
algebra
logic
parabolas
axes
expansions
pascal's triangle
menace
products
rectangles
planes
ellipses
speed
cube numbers
probability
games
functions
unit fractions
polynomials
perfect numbers
spheres
trigonometry
quadratics
books
time
geometric mean
coins
shape
3d shapes
2d shapes
probabilty
christmas
multiplication
gerrymandering
matrices
star numbers
geometry
lists
bases
partitions
number
elections
sequences
wordplay
neighbours
square numbers
chess
addition
means
grids
symmetry
pentagons
coordinates
factors
complex numbers
digits
fractions
tangents
indices
prime factors
volume
lines
shapes
xor
tiling
chocolate
digital products
cards
percentages
numbers
dates
even numbers
medians
balancing
perimeter
triangle numbers
sport
money
binary
decahedra
factorials
consecutive numbers
floors
remainders
determinants
chalkdust crossnumber
arrows
powers
the only crossnumber
palindromes
scales
crossnumbers
multiplaction squares
squares
colouring
tournaments
integration
integers
square roots
proportion
clocks
quadrilaterals
irreducible numbers
polygons
dominos
taxicab geometry
averages
range
ave
digital clocks
multiples
mean
triangles
prime numbers
sets
square grids
advent
crosswords
angles
regular shapes
cubics
surds
division
sum to infinity
differentiation
albgebra
geometric means
doubling
cryptic clues
folding tube maps
hexagons
median
dice
people maths
routes
dodecagons
odd numbers
rugby
combinatorics
cryptic crossnumbers
graphs
consecutive integers
calculus
sums
circles
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