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