# Puzzles

## Lots of ones

Is any of the numbers 11, 111, 1111, 11111, ... a square number?

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

puzzles about numbers, or a random puzzle.

puzzles about numbers, or a random puzzle.

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Is any of the numbers 11, 111, 1111, 11111, ... a square number?

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

puzzles about numbers, or a random puzzle.

puzzles about numbers, or a random puzzle.

Not Roman numerals

Breaking Chocolate

Square and cube endings

List of all puzzles