24 December

Today's number is the largest possible remainder which can be obtained when dividing one of the answers in this advent calendar by another answer smaller than it (not including today's answer!).


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 Most recent collections 

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


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