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Advent calendar 2015
8 December
All 2015 advent puzzles
~
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What is the largest number of factors which a number less than a million has?
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720720 has 240 factors.
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Most recent collections
Advent calendar 2024
Advent calendar 2023
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List of all puzzles
Tags
cryptic clues
averages
albgebra
algebra
decahedra
sport
wordplay
division
circles
cryptic crossnumbers
ave
remainders
the only crossnumber
taxicab geometry
multiplication
crossnumber
factorials
palindromes
surds
determinants
coordinates
sums
binary
rugby
unit fractions
odd numbers
area
digits
lines
dominos
clocks
integers
median
planes
perfect numbers
digital clocks
differentiation
matrices
colouring
volume
dice
square numbers
chess
hexagons
powers
crossnumbers
rectangles
even numbers
star numbers
tiling
number
indices
irreducible numbers
products
advent
neighbours
menace
regular shapes
bases
geometry
games
elections
logic
chalkdust crossnumber
pentagons
books
gerrymandering
geometric means
people maths
sets
multiples
3d shapes
routes
prime numbers
speed
integration
consecutive numbers
scales
partitions
factors
medians
triangles
mean
graphs
symmetry
tangents
balancing
axes
range
dodecagons
arrows
pascal's triangle
floors
percentages
functions
combinatorics
square grids
expansions
calculus
numbers
probability
cubics
sequences
grids
probabilty
perimeter
dates
quadratics
money
shapes
crosswords
polygons
square roots
2d shapes
quadrilaterals
shape
ellipses
angles
proportion
spheres
squares
numbers grids
chocolate
coins
addition
means
polynomials
fractions
parabolas
consecutive integers
time
cube numbers
complex numbers
triangle numbers
sum to infinity
folding tube maps
christmas
trigonometry
digital products
geometric mean
doubling
cards
tournaments
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