mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2019

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 2020

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2021