The ratio of the number of countries whose name starts with vowel and located in the Southern Hemisphere, to the number of countries, the name of whose capital cities starts with a vowel in the table above is:
Explanation:
There are three countries, Argentina, Australia and Equador, which start with a vowel and are in the Southern Hemisphere.
There are two countries, Canada and Ghana, whose capitals (Ottawa and Accra) start with a vowel.
∴ The required ratio = 3 : 2
Hence, option (a).
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