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Advent calendar 2021
23 December
All 2021 advent puzzles
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I draw the parabola \(y=x^2\) and mark points on the parabola at \(x=17\) and \(x=-6\). I then draw a straight line connecting these two points.
At which value of \(y\) does this line intercept the \(y\)-axis?
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The line will meet the \(y\)-axis at y=
102
.
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range
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sum to infinity
triangles
unit fractions
medians
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ave
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circles
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colouring
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3d shapes
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digital clocks
numbers grids
grids
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angles
rugby
folding tube maps
sport
speed
median
integration
albgebra
wordplay
bases
the only crossnumber
percentages
square numbers
planes
multiples
pascal's triangle
differentiation
taxicab geometry
geometry
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surds
quadrilaterals
books
routes
tiling
dice
binary
sums
addition
coins
prime numbers
squares
time
factorials
irreducible numbers
scales
graphs
parabolas
expansions
consecutive integers
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lines
volume
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consecutive numbers
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division
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