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#### Sunday Afternoon Maths LIX

Turning SquaresElastic Numbers

Square Pairs

#### Sunday Afternoon Maths LVIII

Factorial PatternPlacing Plates

#### Advent Calendar 2016

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Largest Odd FactorsList of All Puzzles

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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)

If you enjoyed this puzzle, check out Sunday Afternoon Maths LIX,

puzzles about irreducible numbers, or a random puzzle.

puzzles about irreducible numbers, or a random puzzle.