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

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Q: 139 (IAS/1996)
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 ?

question_subject: 

Logic/Reasoning

question_exam: 

IAS

stats: 

0,11,6,2,2,11,2

keywords: 

{'roads': [0, 1, 0, 2], 'road': [1, 2, 5, 6], 'storm': [0, 1, 0, 2], 'hoods': [0, 1, 0, 0], 'country': [27, 2, 36, 66]}

The question provides a scenario where different routes leading to a country are blocked under certain circumstances. During storm, road Y is blocked. During floods, roads X, 1 and 2 are blocked and whenever road 1 is blocked, road Z also gets blocked.

Given in the question there is both a storm and floods, we need to identify the unblocked roads.

Option 1: Z and 2. This is incorrect as both Z and 2 are blocked during floods.

Option 2: Only Z. This is also incorrect as Z gets blocked when road 1 is blocked, which happens during floods.

Option 3: Only 3. This is correct because the question does not state that road 3 ever gets blocked regardless of storms or floods.

Option 4: Only Y. This is incorrect as road Y is blocked during the storm.

Therefore, the correct answer is `Only 3` which is the road that remains unaffected by storms and floods.