1721: Six roads lead to a country. They may be indicated by letters X, Y, Z and digits 1, 2, 3. When there is storm, Y is blocked. When there are floods X, 1 and 2 will be affected. When road 1 is blocked, Z also is blocked. At a time when there are Hoods and a storm also blows, which road(s) can be used ?
(a) Z and 2
(b) Only Z
(c) Only 3
(d) Only Y
1722: Consider the following statements:

1. The Nuclear Security Summits are periodically held under the aegis of the United Nations.

2. The International Panel on Fissile Materials is an organ of International Atomic Energy Agency.

Which of the statements given above is/are correct?

(a) 1 only
(b) 2 only
(c) Both 1 and 2
(d) Neither 1 nor 2
1723: Which one of the following does not border Panama?

(a) Costa Rica
(b) Pacific Ocean
(c) Colombia
(d) Venezuela
1724: From the third century AD when the Hun invasion ended the Roman Empire, the Indian merchants relied more and more on the

(a) African trade

(b) West-European trade

(c) South-East Asian trade

(d) Middle-Eastern trade
1725: Which among the following pairs of places have most marked difference in total rainfall per annum even though located approximately along the same latitude?

(a) Bangalore and Madras

(b) Bombay and Visakhapatnam

(c) Ajmer and Shillong

(d) Nagpur and Calcutta