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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?
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343
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numbers
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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
number
odd numbers
surds
circles
the only crossnumber
cryptic crossnumbers
taxicab geometry
pascal's triangle
lines
dodecagons
even numbers
dice
expansions
folding tube maps
colouring
rugby
elections
palindromes
menace
tangents
probability
averages
sets
indices
products
integers
square numbers
tiling
crossnumbers
arrows
prime numbers
factorials
speed
ave
division
parabolas
regular shapes
perimeter
median
triangle numbers
remainders
planes
binary
determinants
pentagons
shape
chocolate
range
perfect numbers
dates
irreducible numbers
dominos
decahedra
multiples
chess
crossnumber
spheres
algebra
cards
proportion
coins
polygons
clocks
axes
geometric mean
differentiation
percentages
probabilty
sequences
albgebra
time
digits
wordplay
sport
star numbers
cube numbers
sums
volume
polynomials
unit fractions
floors
cubics
partitions
quadrilaterals
consecutive numbers
square roots
logic
geometric means
shapes
digital products
means
numbers
grids
factors
routes
combinatorics
matrices
sum to infinity
books
crosswords
geometry
cryptic clues
2d shapes
doubling
integration
quadratics
digital clocks
addition
functions
mean
tournaments
3d shapes
coordinates
money
people maths
christmas
fractions
triangles
complex numbers
advent
chalkdust crossnumber
gerrymandering
graphs
scales
calculus
bases
symmetry
games
squares
hexagons
consecutive integers
multiplication
rectangles
angles
balancing
trigonometry
ellipses
area
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