mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

Bending a straw

Two points along a drinking straw are picked at random. The straw is then bent at these points. What is the probability that the two ends meet up to make a triangle?

Show answer & extension

If you enjoyed this puzzle, check out Sunday Afternoon Maths LX,
puzzles about geometry, 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

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

Archive

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