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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Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

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


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