mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2017

10 December

How many zeros does 1000! (ie 1000 × 999 × 998 × ... × 1) end with?

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

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

Archive

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