USD/INR opened at Rs. 69.4075 against its closing at Rs. 69.5250. USD/INR opened lower on Monday on selling by foreign banks tracking a weak greenback following a dismal economic data release in the last session from the US.The dollar is weak after a set of poor economic data from the US on Friday. Foreign banks are on the sell-side.The greenback traded lower against major counterparts after a weak economic data release of Friday, pointing to slow down in economic growth in the world's biggest economy. The dollar index, a gauge that measures the strength of the greenback against a basket of six other major currencies, traded at 97.55 compared to 97.80 at close of Indian market on Friday.......