KARACHI, Aug 12 (APP):Treasury Management Division of National Bank of Pakistan (NBP) on Wednesday, following exchange rates. CURRENCY SYMBOL TT Selling TT Buying US DOLLAR USD 278.05277.55 EURO EUR320.76320.18 JAPANESE YENJPY1.7442 1.7410 BRITISH POUND GBP375.74 374.88 SWISS FRANCCHF342.47341.85 CANADIAN DOLLARCAD199.61 199.25 AUSTRALIAN DOLLARAUD196.23 195.88 SWEDISH KRONA SEK 29.17 29.12 NORWEGIAN KRONE …