১০৪৮১
The exchange of commodities between two countries is referred as -
উত্তর
Bilateral trade
১০৪৮৩
The branch of science dealing with the study or collection of coins, banknotes, and medals is known as -
উত্তর
Numismatics
১০৪৮৪
Which of the following countries has recently launched the world's longest zip line meaning 2.83 km in length?
উত্তর
UAE