Advent calendar 2016

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


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