Âé¶¹´«Ã½ puzzle #30: Sticking in a pinIn this week’s puzzle, work out a PIN from the square of the number. Can you do it? Plus, a quick quizRegulars
Âé¶¹´«Ã½ puzzle #21, plus quick quizA puzzle where the key is to work it out without a calculator, answer to puzzle #20, plus the quizRegulars