In this question, three statements are given followed by three conclusions. You have to assume everything in the statement to be true, then consider the given conclusions together and decide which of them logically follows beyond a reasonable doubt from the information given in the statements.  Statements: All cats are rats. All rats are dogs. Some dogs are animals. Conclusions: i) Some cats are dogs ii) All dogs are rats iii) All animals are dogs

In this question, three statements are given followed by three conclusions. You have to assume everything in the statement to be true, then consider the given conclusions together and decide which of them logically follows beyond a reasonable doubt from the information given in the statements.  Statements: All cats are rats. All rats are dogs. Some dogs are animals. Conclusions: i) Some cats are dogs ii) All dogs are rats iii) All animals are dogs Correct Answer Only i)

Drawing the Venn diagram,

[ src="//storage.googleapis.com/tb-img/production/20/06/F3_Shailesh.Y_27-05-2020_Savita_D3.png" style="width: 207px; height: 114px;">

Conclusion 1: Some cats are dogs → True (This is definitely true)

[ src="//storage.googleapis.com/tb-img/production/20/06/F3_Shailesh.Y_27-05-2020_Savita_D4.png" style="width: 110px; height: 81px;">

Conclusion 2: All dogs are rats → False (This is possible but not definite)

Conclusion 3: All animals are dogs → False (This is possible but not definite)

Hence, “only conclusion 1” follows

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