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Advent calendar 2015

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

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