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


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