Statement:Only a few rivers are lakesAll rivers are oceanAll oceans are streamConclusion: All stream being lakes is a possibilityAt least some oceans are riversIf only conclusion 1 followIf neither conclusion 1 nor conclusion 2 followsIf conclusion 1 and 2 both followIf only conclusion 2 follows
Question
Statement:Only a few rivers are lakesAll rivers are oceanAll oceans are streamConclusion: All stream being lakes is a possibilityAt least some oceans are riversIf only conclusion 1 followIf neither conclusion 1 nor conclusion 2 followsIf conclusion 1 and 2 both followIf only conclusion 2 follows
Solution
The answer is "If conclusion 1 and 2 both follow".
Here's why:
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"All stream being lakes is a possibility": This is possible because all rivers are oceans and all oceans are streams. Since only a few rivers are lakes, it means there is a possibility that some streams (which include rivers and oceans) could be lakes.
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"At least some oceans are rivers": This is true because the statement says "All rivers are ocean". This means there are definitely some oceans that are rivers.
So, both conclusions follow the given statements.
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