Advent calendar 2015

9 December

You start at A and are allowed to move either to the right or upwards.
How many different routes are there to get from A to B?


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Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

Sunday Afternoon Maths LXV

Cryptic crossnumber #1
Breaking Chocolate
Square and cube endings

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balancing lines logic chalkdust crossnumber multiples 2d shapes addition differentiation star numbers dates planes unit fractions doubling folding tube maps number numbers books palindromes percentages polygons graphs functions means pascal's triangle odd numbers prime numbers circles christmas mean colouring ellipses games geometry scales proportion factors speed clocks cryptic clues crossnumbers advent sport averages routes sums factorials cards rugby grids surds arrows sum to infinity probability probabilty triangle numbers square roots wordplay square numbers people maths cube numbers dice integers algebra volume perimeter trigonometry fractions area bases division regular shapes crosswords squares spheres coins parabolas complex numbers chess irreducible numbers ave menace multiplication dodecagons triangles chocolate cryptic crossnumbers hexagons time sequences digits quadratics floors coordinates 3d shapes taxicab geometry integration rectangles money shapes angles indices symmetry calculus remainders perfect numbers shape partitions


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