The real exchange rate (RER) is the purchasing power of a currency relative to another at current exchange rates and prices.

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In order to determine which is the fixed currency when neither currency is on the above list (i.e.

both are "other"), market convention is to use the fixed currency which gives an exchange rate greater than 1.000.

119, or equivalently that the price of a yen in relation to dollars is $1/119.

Exchange rates are determined in the foreign exchange market,[2] which is open to a wide range of different types of buyers and sellers, and where currency trading is continuous: 24 hours a day except weekends, i.e. The spot exchange rate refers to the current exchange rate.

The forward exchange rate refers to an exchange rate that is quoted and traded today but for delivery and payment on a specific future date.

In some areas of Europe and in the retail market in the United Kingdom, EUR and GBP are reversed so that GBP is quoted as the fixed currency to the euro.Forex markets are among the most active markets in the world in terms of dollar volume.The participants include large banks, multinational corporations, governments, and speculators.They also incorporate genetic algorithm as an optimizing technique for adapting parameters of ANN which is then compared with standard backpropagation and backpropagation combined with K-means clustering algorithm.Finally, the authors find out that their suggested hybrid neural network is able to produce more accurate forecasts than the standard models and can be helpful in eliminating the risk of making the bad decision in decision-making process. Profits or losses accrue as the exchange rate of that currency fluctuates on the open market.The authors suggest a new hybrid neural network which is a combination of the standard RBF neural network, a genetic algorithm, and a moving average.