How is the exchange rate (for say 1 US $) on any particular day is decided?

One of the ways exchange rate is set is by what the demand for us$ is from the world market everyday on the forex exchange. People and other countries around the world trade it just like you would a stock. Their confidence in the USD determins buying or selling of dollars... euros... or any other currency

How is the exchange rate (for say 1 US $) on any particular day is decided?

It depends on the world market of the price of Gold for the day, and depending on the country or type of money you are referring to.

How is the exchange rate (for say 1 US $) on any particular day is decided?

It depends on the strenght of our money in reference to another specific country. The Yen is up agianst the Dollar. Means that the Japanese can buy more U.S. goods for the same Yen when converted to dollars. Many factors determine this like gold prices, currency demands, interest rates and economic forcasts of the specific countries. Demand also has a major impact. The dollar has done real well because we have a stable government and it%26#039;s not easy to disrupt our economy.

How is the exchange rate (for say 1 US $) on any particular day is decided?

the powers that be come to yahoo answers to gain points if they do not make them as fast as they want they get ticked of blame it on another country devalue that countries currency and add the value to US currency. If they do well and had an answer to a question from another country chosen as the best answer they smile feel generous and hand the other country a % of the US currency. It is either that or they pull numbers out of hats and assign that number to the exchange rate , smile at a job well done then trot off home for a few hours to play on yahoo answers