mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

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.

Show answer

15 December

There are 5 ways to make 30 by multiplying positive integers (including the trivial way):
Today's number is the number of ways of making 30030 by multiplying.

Show answer

Archive

Show me a random puzzle
 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

List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2020