mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

Let the passenger train through!

A goods train, made up of a locomotive and 5 trucks, stops at a small station. The small station has a siding which the goods train can reverse into. The siding can hold an engine and two trucks or three trucks.
A passenger train arrives travelling in the opposite direction. How can they let it through? (The passenger train is too long to fit in the siding.)

Show answer & extension

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

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

Archive

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