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Advent calendar 2016
2 December
All 2016 advent puzzles
~
More information
What is the maximum number of lines that can be formed by the intersection of 30 planes?
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435
Tags:
lines
,
planes
,
geometry
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chalkdust crossnumber
the only crossnumber
gerrymandering
cryptic clues
prime numbers
median
squares
lines
christmas
area
axes
multiplication
2d shapes
consecutive integers
tournaments
circles
calculus
money
rugby
crossnumbers
scales
crosswords
dominos
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dates
chocolate
sum to infinity
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algebra
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perfect numbers
grids
neighbours
square grids
digits
square numbers
differentiation
routes
chess
polynomials
factors
powers
probability
number
parabolas
surds
3d shapes
doubling
products
sequences
palindromes
pentagons
coordinates
geometric mean
combinatorics
rectangles
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consecutive numbers
functions
addition
folding tube maps
integers
medians
cubics
clocks
coins
mean
averages
matrices
dice
sets
digital products
geometric means
time
floors
cryptic crossnumbers
regular shapes
advent
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odd numbers
elections
proportion
people maths
numbers grids
factorials
numbers
planes
dodecagons
indices
star numbers
square roots
unit fractions
digital clocks
wordplay
arrows
even numbers
taxicab geometry
polygons
partitions
games
remainders
sums
quadratics
means
percentages
perimeter
volume
ellipses
symmetry
spheres
multiples
logic
triangle numbers
probabilty
speed
complex numbers
decahedra
menace
shape
binary
integration
division
angles
pascal's triangle
albgebra
irreducible numbers
colouring
range
expansions
cube numbers
books
graphs
fractions
ave
geometry
tangents
tiling
balancing
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
square grids
partitions
speed
axes
quadratics
indices
even numbers
arrows
mean
median
regular shapes
unit fractions
square roots
powers
irreducible numbers
spheres
surds
routes
functions
books
shape
consecutive integers
taxicab geometry
3d shapes
calculus
clocks
numbers
pentagons
dice
sums
shapes
trigonometry
perimeter
dodecagons
coordinates
polygons
cubics
products
factorials
combinatorics
multiplication
cryptic clues
scales
triangle numbers
neighbours
consecutive numbers
digital products
integration
folding tube maps
perfect numbers
lines
palindromes
chalkdust crossnumber
geometric means
sport
floors
elections
algebra
geometric mean
2d shapes
crosswords
triangles
bases
multiples
colouring
advent
christmas
hexagons
averages
percentages
geometry
means
graphs
dominos
range
area
star numbers
quadrilaterals
cryptic crossnumbers
division
proportion
doubling
crossnumbers
odd numbers
gerrymandering
polynomials
angles
coins
binary
menace
square numbers
expansions
decahedra
medians
albgebra
probabilty
the only crossnumber
prime numbers
tangents
ave
dates
parabolas
matrices
tiling
cards
volume
digital clocks
sets
squares
rugby
symmetry
balancing
differentiation
chocolate
cube numbers
probability
tournaments
sequences
chess
addition
time
remainders
ellipses
people maths
pascal's triangle
numbers grids
circles
factors
number
sum to infinity
money
fractions
complex numbers
determinants
integers
rectangles
grids
digits
games
planes
wordplay
logic
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