Penny - online puzzles

A penny is a coin (pl. pennies) or a unit of currency (pl. pence) in various countries. Borrowed from the Carolingian denarius (whence its former abbreviation d.), it is usually the smallest denomination within a currency system. Presently, it is the formal name of the British penny (abbr. p) and the informal name of one American cent (abbr. ¢) as well as the informal Irish designation of 1 cent euro coin (abbr. c). It is the informal name of the cent unit of account in Canada, although one cent coins are no longer minted there. The name is also used in reference to various historical currencies also derived from the Carolingian system, such as the French denier and the German pfennig.