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Advent calendar 2016
8 December
All 2016 advent puzzles
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Today's number is the second smallest number that can be written as a×b×c×d×e×f×g×h×i, where a,b,...,i are all integers greater than 1.
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768
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Most recent collections
Advent calendar 2025
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
List of all puzzles
Tags
geometry
decahedra
volume
people maths
rugby
chocolate
xor
addition
unit fractions
prime factors
colouring
numbers
multiplication
coordinates
menace
star numbers
dates
dodecagons
time
geometric mean
powers
multiples
lists
sets
sequences
trigonometry
axes
polygons
perfect numbers
angles
taxicab geometry
arrows
digits
probability
medians
routes
quadrilaterals
cards
scales
percentages
complex numbers
indices
games
grids
differentiation
sums
sport
factors
surds
matrices
cube numbers
tangents
advent
bases
pascal's triangle
algebra
parabolas
division
odd numbers
products
binary
albgebra
digital products
fractions
consecutive numbers
cryptic crossnumbers
hexagons
tiling
neighbours
ellipses
elections
gerrymandering
palindromes
crossnumbers
functions
prime numbers
rectangles
factorials
logic
circles
means
christmas
mean
wordplay
books
the only crossnumber
2d shapes
floors
quadratics
geometric means
chalkdust crossnumber
integers
graphs
shape
cubics
digital clocks
ave
pentagons
chess
polynomials
consecutive integers
square grids
combinatorics
doubling
probabilty
shapes
averages
even numbers
spheres
folding tube maps
coins
money
regular shapes
irreducible numbers
determinants
multiplaction squares
3d shapes
cryptic clues
area
perimeter
integration
remainders
squares
sum to infinity
calculus
tournaments
dominos
triangle numbers
median
dice
crosswords
speed
triangles
clocks
lines
expansions
number
range
proportion
square roots
symmetry
square numbers
planes
partitions
balancing
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