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