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


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