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Advent calendar 2017
8 December
All 2017 advent puzzles
~
More information
The odd numbers are written in a pyramid.
1
3
5
7
9
11
etc.
What is the mean of the numbers in the 23rd row?
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529
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numbers
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multiplication
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dominos
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folding tube maps
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irreducible numbers
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chalkdust crossnumber
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averages
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ave
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chocolate
geometric means
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odd numbers
elections
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multiples
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arrows
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crossnumber
hexagons
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sum to infinity
quadratics
time
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christmas
grids
addition
coordinates
doubling
axes
perfect numbers
ellipses
geometric mean
triangle numbers
clocks
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cryptic crossnumbers
floors
angles
palindromes
advent
Archive
Show me a random puzzle
▼ show ▼
▲ hide ▲
Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
Advent calendar 2020
List of all puzzles
Tags
wordplay
palindromes
colouring
integers
speed
averages
folding tube maps
tiling
probabilty
multiplication
calculus
clocks
volume
symmetry
functions
books
combinatorics
division
2d shapes
albgebra
menace
time
factors
determinants
hexagons
cube numbers
scales
area
star numbers
mean
routes
algebra
sport
square numbers
christmas
chalkdust crossnumber
sums
multiples
parabolas
digital products
spheres
pascal's triangle
number
crossnumber
regular shapes
matrices
addition
elections
digits
axes
gerrymandering
probability
floors
dominos
ellipses
triangle numbers
surds
sequences
angles
logic
cryptic clues
tangents
bases
partitions
prime numbers
doubling
coordinates
chocolate
advent
shapes
odd numbers
trigonometry
coins
3d shapes
irreducible numbers
geometry
grids
quadrilaterals
games
planes
money
consecutive numbers
factorials
proportion
crosswords
graphs
quadratics
people maths
shape
unit fractions
percentages
fractions
differentiation
chess
pentagons
integration
sum to infinity
triangles
complex numbers
perimeter
consecutive integers
means
circles
geometric means
dice
square roots
polygons
taxicab geometry
numbers
tournaments
remainders
range
indices
median
polynomials
geometric mean
balancing
digital clocks
expansions
binary
the only crossnumber
arrows
lines
cards
dates
decahedra
squares
perfect numbers
crossnumbers
products
dodecagons
rectangles
even numbers
rugby
cryptic crossnumbers
sets
ave
cubics
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