mscroggs
.co.uk
mscroggs
.co.uk
blog
puzzles
academic
talks
contact
subscribe
↓ ☰ ↓
subscribe
Loading image...
Advent calendar 2015
5 December
All 2015 advent puzzles
~
More information
How many different triangles are there with a perimeter of 100 and each side having an integer length?
(different = not rotations or reflections)
Show answer
Hide answer
208
Tags:
triangles
,
2d shapes
Archive
Show me a random puzzle
Most recent collections
Advent calendar 2025
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
List of all puzzles
Tags
menace
clocks
digital clocks
probability
hexagons
games
books
calculus
colouring
averages
surds
addition
products
cryptic crossnumbers
2d shapes
shapes
rectangles
tiling
wordplay
shape
numbers
polynomials
area
squares
chocolate
sets
lines
arrows
lists
ellipses
tournaments
square roots
crossnumbers
people maths
dodecagons
consecutive numbers
irreducible numbers
division
time
christmas
square numbers
factorials
money
dates
quadratics
volume
integration
prime factors
differentiation
multiplication
sums
geometric means
bases
cryptic clues
unit fractions
chess
cards
fractions
cubics
determinants
multiples
dice
symmetry
powers
rugby
scales
speed
coins
complex numbers
quadrilaterals
algebra
dominos
neighbours
parabolas
median
integers
mean
probabilty
digital products
factors
spheres
perimeter
taxicab geometry
logic
multiplaction squares
matrices
sum to infinity
indices
crosswords
remainders
prime numbers
triangles
sport
doubling
geometry
digits
pentagons
xor
grids
circles
star numbers
chalkdust crossnumber
percentages
square grids
cube numbers
odd numbers
consecutive integers
elections
graphs
ave
number
folding tube maps
planes
palindromes
coordinates
polygons
the only crossnumber
partitions
albgebra
triangle numbers
gerrymandering
axes
advent
combinatorics
functions
means
pascal's triangle
sequences
binary
expansions
perfect numbers
range
even numbers
balancing
decahedra
geometric mean
regular shapes
floors
proportion
trigonometry
medians
tangents
3d shapes
routes
angles
Archive
Show me a random puzzle
▼ show ▼
▲ hide ▲
Most recent collections
Advent calendar 2025
Advent calendar 2024
Advent calendar 2023
Advent calendar 2022
List of all puzzles
Tags
partitions
elections
multiplication
square roots
circles
means
folding tube maps
decahedra
powers
colouring
games
determinants
consecutive numbers
scales
money
menace
expansions
prime factors
sequences
ave
2d shapes
combinatorics
pascal's triangle
wordplay
fractions
digits
cryptic clues
digital products
probabilty
shapes
remainders
odd numbers
books
spheres
volume
axes
the only crossnumber
perimeter
differentiation
factorials
functions
symmetry
gerrymandering
lines
sums
taxicab geometry
polygons
hexagons
digital clocks
shape
ellipses
quadrilaterals
geometric mean
even numbers
planes
matrices
prime numbers
albgebra
multiplaction squares
cube numbers
multiples
products
consecutive integers
regular shapes
surds
parabolas
sum to infinity
pentagons
addition
geometry
chess
integration
coordinates
floors
dates
square grids
percentages
palindromes
doubling
averages
integers
crossnumbers
indices
perfect numbers
dice
sport
division
speed
advent
irreducible numbers
numbers
square numbers
time
tangents
complex numbers
routes
triangles
sets
cubics
dominos
lists
clocks
range
xor
arrows
mean
tournaments
tiling
proportion
binary
chalkdust crossnumber
3d shapes
trigonometry
geometric means
squares
coins
area
bases
triangle numbers
quadratics
grids
rectangles
star numbers
factors
unit fractions
number
polynomials
medians
crosswords
median
algebra
chocolate
balancing
calculus
cards
dodecagons
neighbours
people maths
angles
logic
graphs
rugby
cryptic crossnumbers
probability
christmas
© Matthew Scroggs 2012–2026