mscroggs
.co.uk
mscroggs
.co.uk
blog
puzzles
academic
talks
contact
subscribe
↓ ☰ ↓
subscribe
Loading image...
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?
Show answer
Hide answer
529
Tags:
numbers
Archive
Show me a random puzzle
Most recent collections
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
List of all puzzles
Tags
shapes
number
geometric mean
people maths
rugby
clocks
elections
cryptic clues
tournaments
scales
spheres
binary
digits
averages
consecutive numbers
sums
fractions
routes
area
planes
odd numbers
geometry
square grids
calculus
games
determinants
speed
quadrilaterals
hexagons
dates
advent
rectangles
consecutive integers
money
perfect numbers
decahedra
digital clocks
doubling
even numbers
combinatorics
balancing
multiples
gerrymandering
pentagons
mean
triangles
crossnumbers
expansions
square roots
unit fractions
proportion
menace
means
sum to infinity
arrows
complex numbers
neighbours
bases
integers
palindromes
trigonometry
graphs
functions
sets
folding tube maps
multiplication
chocolate
cards
polygons
probabilty
dodecagons
numbers
ellipses
grids
wordplay
albgebra
matrices
taxicab geometry
cubics
shape
cryptic crossnumbers
quadratics
range
differentiation
axes
indices
time
digital products
books
floors
dice
sport
remainders
dominos
ave
perimeter
volume
geometric means
parabolas
irreducible numbers
prime numbers
products
numbers grids
triangle numbers
christmas
percentages
circles
logic
medians
addition
coordinates
factorials
chess
pascal's triangle
division
sequences
angles
crosswords
colouring
2d shapes
symmetry
squares
tiling
square numbers
surds
median
integration
chalkdust crossnumber
partitions
factors
lines
star numbers
3d shapes
cube numbers
the only crossnumber
coins
powers
algebra
probability
tangents
regular shapes
polynomials
Archive
Show me a random puzzle
▼ show ▼
▲ hide ▲
Most recent collections
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
List of all puzzles
Tags
unit fractions
decahedra
consecutive numbers
dice
quadrilaterals
hexagons
integration
odd numbers
number
cryptic clues
medians
money
taxicab geometry
multiplication
pentagons
shapes
prime numbers
sum to infinity
bases
menace
clocks
even numbers
matrices
axes
calculus
logic
elections
sums
chocolate
fractions
routes
lines
parabolas
crosswords
determinants
quadratics
shape
3d shapes
gerrymandering
integers
remainders
advent
algebra
books
planes
perfect numbers
symmetry
powers
numbers grids
cube numbers
products
rectangles
the only crossnumber
star numbers
probability
coins
triangles
perimeter
proportion
geometry
cryptic crossnumbers
doubling
2d shapes
colouring
angles
albgebra
means
multiples
grids
digits
circles
consecutive integers
differentiation
crossnumbers
partitions
numbers
expansions
tournaments
polygons
factorials
sets
rugby
digital clocks
neighbours
volume
spheres
probabilty
people maths
folding tube maps
floors
square numbers
binary
square grids
complex numbers
chalkdust crossnumber
triangle numbers
averages
games
functions
palindromes
pascal's triangle
cards
range
combinatorics
christmas
indices
division
dominos
geometric means
addition
coordinates
ellipses
wordplay
dodecagons
percentages
balancing
geometric mean
digital products
median
chess
arrows
mean
scales
irreducible numbers
time
tiling
graphs
regular shapes
squares
surds
square roots
sport
tangents
dates
area
trigonometry
ave
factors
polynomials
speed
sequences
cubics
© Matthew Scroggs 2012–2025