Which of the following is a unit of length in the old imperial and the U.S. customary systems, used especially for measuring the depth of water?
1). Nautical Mile
2). Fathom
3). Yards
4). Cable length
1. Who amongst the following is the Defence Minister of India at present ?
2. What will come in place of the question mark (?) in the following questions ?
6. In how many different ways a group of 4 men and 4 women be formed out of 7 men and 8 women ?