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