Formally, the difference between two numbers, x and y, is abs(x - y) which is never negative. If the two numbers are the same then the difference is 0 else it is positive. I â¦ f you define the difference as x - y then it is positive if x > y, 0 if x = y and negative if x y.
Australia used pounds, shillings and pence until 1966, when it adopted the decimal system with the Australian dollar divided into 100 cents. With the exception of the first Proclamation Coinage and the holey dollars, all Australian coins remain legal tender despite being withdrawn from circulation.e was worried that the coins would quickly be exported out of the colony and had holes cut in the middle of them to try to keep them in Australia. These were known as Holey dollars (valued at five shillings), with the piece from the middle being called the Dump (valued at around 15 pence).
From 1910 to 1966, Australia used a monetary system system identical to the old British system of Pounds, Shillings and Pence. 12 Pence to a Shilling, 20 Shillings to a Pound. Australia's currency is the Australian Dollar (AUD). There are 100 cents in the Australian Dollar. Australia adopted this currency on the 14th of February, 1966. <br /> Its value is heavily influenced by commodity prices with traditionally high interest rates a factor.