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