mscroggs
.co.uk
mscroggs
.co.uk
blog
puzzles
academic
talks
contact
subscribe
subscribe
Loading image...
Advent calendar 2017
7 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 sum of the numbers in the seventh row?
Show answer
Hide answer
343
Tags:
numbers
Archive
Show me a random puzzle
Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
Advent calendar 2020
List of all puzzles
Tags
surds
circles
sport
dominos
planes
taxicab geometry
christmas
chocolate
doubling
pentagons
algebra
expansions
regular shapes
the only crossnumber
triangle numbers
geometric mean
unit fractions
decahedra
grids
routes
geometry
multiples
prime numbers
averages
trigonometry
elections
cryptic crossnumbers
number
3d shapes
differentiation
wordplay
axes
probabilty
lines
coordinates
gerrymandering
median
tangents
addition
time
digital clocks
quadrilaterals
spheres
odd numbers
probability
books
floors
combinatorics
integration
tiling
functions
tournaments
polynomials
digits
irreducible numbers
even numbers
multiplication
triangles
crossnumber
geometric means
chess
sets
parabolas
polygons
speed
digital products
graphs
logic
determinants
cubics
crossnumbers
calculus
ellipses
cryptic clues
albgebra
means
products
crosswords
complex numbers
games
folding tube maps
sum to infinity
dodecagons
integers
coins
palindromes
cards
symmetry
rugby
binary
mean
hexagons
clocks
fractions
consecutive numbers
indices
2d shapes
chalkdust crossnumber
factorials
proportion
square roots
shape
numbers
menace
money
partitions
people maths
percentages
colouring
matrices
perimeter
squares
sums
square numbers
scales
dice
factors
bases
dates
division
star numbers
consecutive integers
quadratics
advent
rectangles
remainders
perfect numbers
pascal's triangle
cube numbers
balancing
arrows
volume
sequences
area
angles
ave
range
shapes
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
coordinates
sets
volume
palindromes
chalkdust crossnumber
crosswords
quadratics
quadrilaterals
scales
crossnumbers
multiplication
consecutive integers
axes
digital products
routes
cubics
time
planes
integers
spheres
partitions
square roots
factors
folding tube maps
floors
angles
remainders
shape
means
gerrymandering
ellipses
fractions
grids
factorials
expansions
probabilty
hexagons
number
regular shapes
wordplay
averages
advent
tournaments
cryptic crossnumbers
determinants
probability
tangents
doubling
decahedra
multiples
pentagons
geometric means
combinatorics
triangles
sequences
graphs
games
sum to infinity
geometric mean
percentages
area
money
binary
odd numbers
surds
ave
crossnumber
squares
triangle numbers
3d shapes
digits
numbers
geometry
polygons
people maths
parabolas
irreducible numbers
matrices
integration
perfect numbers
algebra
chocolate
complex numbers
even numbers
the only crossnumber
2d shapes
dominos
consecutive numbers
polynomials
lines
dice
dates
menace
cryptic clues
cards
addition
division
mean
clocks
albgebra
differentiation
proportion
christmas
rectangles
median
indices
sport
elections
prime numbers
balancing
speed
square numbers
rugby
functions
coins
symmetry
dodecagons
circles
taxicab geometry
bases
arrows
pascal's triangle
chess
digital clocks
colouring
unit fractions
star numbers
calculus
shapes
perimeter
tiling
logic
sums
range
products
books
cube numbers
trigonometry
© Matthew Scroggs 2012–2024