Advent calendar 2019

24 December

There are six 3-digit numbers with the property that the sum of their digits is equal to the product of their digits. Today's number is the largest of these numbers.

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


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