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

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