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Advent calendar 2019
24 December
All 2019 advent puzzles
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There are six 3-digit numbers with the property that the sum of their digits is equal to the product of their digits. Today's number is the largest of these numbers.
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The digits of the number must be 1, 2 and 3, so the largest number is
321
.
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Most recent collections
Advent calendar 2024
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List of all puzzles
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tiling
circles
regular shapes
crossnumbers
routes
arrows
clocks
taxicab geometry
complex numbers
dates
folding tube maps
number
averages
the only crossnumber
star numbers
games
medians
combinatorics
pascal's triangle
tangents
proportion
calculus
coordinates
digital clocks
remainders
sport
people maths
geometric mean
unit fractions
surds
sums
squares
cryptic clues
graphs
dominos
menace
bases
polygons
prime numbers
axes
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addition
volume
elections
lines
balancing
algebra
area
range
integers
wordplay
decahedra
books
fractions
spheres
differentiation
palindromes
colouring
partitions
matrices
expansions
geometry
time
quadrilaterals
christmas
square roots
3d shapes
even numbers
division
crosswords
tournaments
ave
powers
perfect numbers
determinants
floors
odd numbers
factorials
dice
irreducible numbers
money
speed
geometric means
integration
quadratics
chalkdust crossnumber
percentages
grids
hexagons
sum to infinity
rectangles
numbers
numbers grids
functions
consecutive numbers
coins
angles
neighbours
ellipses
polynomials
triangle numbers
cubics
scales
multiples
albgebra
doubling
shapes
rugby
probability
pentagons
median
cryptic crossnumbers
binary
dodecagons
shape
factors
square grids
symmetry
multiplication
indices
cube numbers
2d shapes
triangles
means
planes
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square numbers
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