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Advent calendar 2016
18 December
All 2016 advent puzzles
~
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The smallest number whose sum of digits is 25.
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Most recent collections
Advent calendar 2025
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
List of all puzzles
Tags
area
decahedra
averages
crosswords
dodecagons
perimeter
albgebra
prime numbers
chess
pascal's triangle
sums
powers
surds
medians
folding tube maps
ave
odd numbers
axes
irreducible numbers
geometric means
cubics
digital clocks
even numbers
factorials
coordinates
floors
indices
advent
coins
cards
volume
sum to infinity
routes
multiplication
planes
complex numbers
probability
rugby
proportion
multiplaction squares
logic
dice
dominos
books
spheres
games
rectangles
doubling
quadratics
dates
hexagons
number
lines
tournaments
tangents
integers
products
money
algebra
pentagons
mean
ellipses
triangles
digits
3d shapes
angles
quadrilaterals
symmetry
clocks
digital products
factors
taxicab geometry
calculus
perfect numbers
the only crossnumber
gerrymandering
people maths
square roots
square numbers
geometric mean
differentiation
numbers
tiling
colouring
elections
probabilty
squares
prime factors
chocolate
speed
binary
determinants
neighbours
xor
geometry
partitions
trigonometry
range
triangle numbers
remainders
parabolas
palindromes
lists
polynomials
shapes
2d shapes
crossnumbers
star numbers
chalkdust crossnumber
circles
time
cryptic clues
division
regular shapes
square grids
polygons
sets
cube numbers
grids
unit fractions
integration
cryptic crossnumbers
functions
sequences
graphs
menace
arrows
consecutive integers
wordplay
percentages
consecutive numbers
christmas
matrices
shape
balancing
fractions
expansions
bases
median
addition
scales
multiples
means
sport
combinatorics
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