4431: For which one of the following countries is Spanish not an official language?
(a) Colombia
(b) Cuba
(c) Republic of Congo
(d) Chile
4432: There are three tables containing two drawers each. It is known that one of the table contains a silver coin in each of its drawers, another table contains a gold coin in each drawer while the third table contains a silver coin in one drawer and a gold coin in the other. One of the drawers of a table is opened and found to contain a silver coin. What is the probability that the other drawer of that table contains a gold coin ?
(a) 1
(b) 0.5
(c) 0.25
(d) 0.75
4433: Antigen is a substance which
(a) lowers body temperature
(b) destroys harmful bacteria
(c) triggers the immune system
(d) is used as an antidote to poison
4434: Consider the following statements:
1. In tropical regions, Zika virus disease is transmitted by the same mosquito that transmits dengue.
2. Sexual transmission of Zika virus disease is possible.
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
4435: What is the largest 4 digit number exactly divisible by 88?