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Advent calendar 2016
10 December
All 2016 advent puzzles
~
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The smallest number that is equal to the sum of its digits multiplied by ten more than the sum of its digits.
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171
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numbers
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digits
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Archive
Show me a random puzzle
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Most recent collections
Advent calendar 2025
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
List of all puzzles
Tags
hexagons
elections
medians
cubics
binary
doubling
dice
expansions
lists
gerrymandering
games
proportion
combinatorics
scales
probabilty
odd numbers
algebra
sum to infinity
square roots
even numbers
digital products
integration
square grids
advent
remainders
routes
symmetry
sport
perfect numbers
multiples
coins
percentages
christmas
triangles
dominos
irreducible numbers
shapes
cards
crosswords
circles
lines
dodecagons
books
multiplaction squares
determinants
differentiation
time
spheres
means
mean
probability
tiling
clocks
speed
integers
trigonometry
2d shapes
complex numbers
functions
fractions
indices
geometry
rugby
rectangles
sequences
planes
ave
cube numbers
shape
crossnumbers
cryptic crossnumbers
angles
factorials
square numbers
polynomials
pentagons
squares
median
area
folding tube maps
tournaments
division
coordinates
consecutive numbers
graphs
floors
3d shapes
wordplay
decahedra
factors
digital clocks
neighbours
surds
consecutive integers
polygons
chalkdust crossnumber
dates
partitions
perimeter
calculus
taxicab geometry
chess
ellipses
regular shapes
volume
the only crossnumber
prime numbers
products
logic
addition
number
cryptic clues
arrows
powers
tangents
parabolas
money
pascal's triangle
xor
quadratics
geometric means
bases
axes
balancing
range
colouring
digits
people maths
unit fractions
sums
grids
multiplication
star numbers
chocolate
triangle numbers
matrices
albgebra
sets
prime factors
averages
menace
quadrilaterals
geometric mean
palindromes
numbers
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