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Advent calendar 2021
17 December
All 2021 advent puzzles
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The digital product of a number is computed by multiplying together all of its digits. For example, the digital product of 6273 is 252.
Today's number is the smallest number whose digital product is 252.
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252 can be written as the product of one-digit numbers in the following ways:
2×2×3×3×7
2×2×9×7
2×3×6×7
3×3×4×7
6×6×7
4×9×7
Therfore, the smallest number whose digital product is 252 is
479
.
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prime numbers
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clocks
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numbers
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means
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even numbers
sequences
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scales
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circles
decahedra
shapes
unit fractions
dominos
triangle numbers
probability
irreducible numbers
colouring
the only crossnumber
chocolate
averages
combinatorics
geometric means
addition
routes
star numbers
differentiation
books
arrows
dice
axes
triangles
elections
proportion
surds
quadrilaterals
cryptic clues
taxicab geometry
division
sets
christmas
shape
spheres
consecutive numbers
palindromes
ellipses
mean
menace
chess
money
multiples
parabolas
geometry
albgebra
pascal's triangle
pentagons
number
products
planes
symmetry
3d shapes
sport
partitions
ave
rectangles
percentages
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people maths
perfect numbers
rugby
folding tube maps
factors
quadratics
factorials
indices
calculus
remainders
volume
2d shapes
speed
balancing
cryptic crossnumbers
angles
integration
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