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