mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

One hundred factorial

How many zeros does \(100!\) end with?

Show answer & extension

If you enjoyed this puzzle, check out Sunday Afternoon Maths XL,
puzzles about factorials, or a random puzzle.

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

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

Archive

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