mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

Colliding parallel people

If two people stand 1km apart and walk in the same direction, how far will the have to walk until they collide due to the curvature of the Earth? (diameter of Earth = 12,742km)

Show answer & extension

Archive

Show me a random puzzle
 Most recent collections 

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

Sunday Afternoon Maths LXV

Cryptic crossnumber #1
Breaking Chocolate
Square and cube endings

List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2019