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