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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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Advent calendar 2025
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coins
logic
2d shapes
percentages
axes
graphs
functions
partitions
cryptic crossnumbers
calculus
geometry
even numbers
star numbers
coordinates
clocks
proportion
neighbours
cryptic clues
geometric means
prime factors
mean
medians
square numbers
triangle numbers
menace
shapes
circles
integration
cubics
dominos
lists
sport
rectangles
gerrymandering
albgebra
books
christmas
combinatorics
regular shapes
rugby
consecutive numbers
products
lines
remainders
area
tournaments
multiples
determinants
integers
square roots
wordplay
matrices
speed
sums
perfect numbers
symmetry
means
games
volume
ellipses
irreducible numbers
arrows
indices
dates
cards
fractions
bases
factors
probabilty
people maths
palindromes
factorials
elections
balancing
prime numbers
binary
sum to infinity
averages
sequences
parabolas
probability
grids
multiplication
tiling
chess
the only crossnumber
3d shapes
sets
time
addition
unit fractions
chalkdust crossnumber
pascal's triangle
scales
quadratics
complex numbers
ave
consecutive integers
folding tube maps
surds
numbers
pentagons
division
odd numbers
planes
multiplaction squares
digits
algebra
chocolate
differentiation
tangents
floors
digital clocks
median
range
cube numbers
advent
polygons
angles
crossnumbers
taxicab geometry
routes
perimeter
hexagons
powers
colouring
xor
quadrilaterals
digital products
money
triangles
expansions
spheres
geometric mean
doubling
square grids
shape
squares
dodecagons
number
polynomials
decahedra
crosswords
trigonometry
dice
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