128.--A PROBLEM IN SQUARES.

From Amusements in Mathematics by Henry Ernest Dudeney.

We possess three square boards. The surface of the first contains five square feet more than the second, and the second contains five square feet more than the third. Can you give exact measurements for the sides of the boards? If you can solve this little puzzle, then try to find three squares in arithmetical progression, with a common difference of 7 and also of 13.

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128.--A PROBLEM IN SQUARES.: Amusements in Mathematics by Henry Ernest Dudeney | amphi