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Advent calendar 2016
15 December
All 2016 advent puzzles
~
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A book has 386 pages. What do the page numbers on the two middle pages add up to?
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387
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numbers
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Most recent collections
Advent calendar 2023
Advent calendar 2022
Advent calendar 2021
Advent calendar 2020
List of all puzzles
Tags
decahedra
probabilty
money
averages
sum to infinity
2d shapes
tangents
chocolate
spheres
parabolas
determinants
pentagons
chalkdust crossnumber
coins
factorials
planes
grids
sets
taxicab geometry
means
algebra
cubics
scales
arrows
crossnumbers
indices
geometric mean
angles
rugby
ellipses
combinatorics
squares
cards
lines
remainders
menace
chess
consecutive integers
irreducible numbers
crossnumber
cryptic clues
star numbers
number
multiplication
dominos
doubling
functions
integers
digital products
probability
geometric means
rectangles
range
unit fractions
gerrymandering
digital clocks
coordinates
folding tube maps
products
mean
square roots
time
floors
triangles
division
digits
advent
wordplay
partitions
logic
expansions
hexagons
shapes
quadratics
even numbers
factors
books
polynomials
ave
triangle numbers
dice
volume
clocks
sums
addition
differentiation
polygons
graphs
proportion
cube numbers
cryptic crossnumbers
complex numbers
people maths
shape
multiples
integration
elections
geometry
median
crosswords
trigonometry
matrices
balancing
the only crossnumber
dodecagons
area
symmetry
perimeter
square numbers
3d shapes
palindromes
regular shapes
numbers
tiling
sequences
axes
christmas
circles
sport
consecutive numbers
prime numbers
routes
odd numbers
dates
percentages
albgebra
colouring
quadrilaterals
calculus
speed
binary
surds
perfect numbers
bases
fractions
games
tournaments
pascal's triangle
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