The foreign exchange trading in global financial markets in the form of currency pairs this market and contains more than 50 currency pairs, each pair of two currencies first currency, called the basic currency or the base currency and the second currency is called the currency or currency pricing is made, the currency pair is currency rate against the other so that it is traded on a permanent basis on the image pairs. For example, if I bought the base currency will sell the currency automatically and vice versa. The Forex trading involves pairs master key currencies, which are the most popular in the market and most importantly in terms of turnout by the investors and this is due to strong movements on the major currency pairs this, therefore, these pairs of currencies is the most heavily traded in the forex market, which also makes them highly liquid , in general, that all the major currency pairs involving the US dollar Among this task couples: