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Three statements are given followed by four conclusions. (I), (II), (III) and (IV). You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You are to decide which of the given conclusions. If any, follow from the given statements. Indicate your answer. Statements: All dogs are rats. All rats are crows. All crows are dogs. Conclusions: All dogs are crows. Some crows are dogs. Some crows are rats. All rats are dogs.

Three statements are given followed by four conclusions. (I), (II), (III) and (IV). You have to consider the statements to be true even if they seem to be at variance from commonly known facts. You are to decide which of the given conclusions. If any, follow from the given statements. Indicate your answer. Statements: All dogs are rats. All rats are crows. All crows are dogs. Conclusions: All dogs are crows. Some crows are dogs. Some crows are rats. All rats are dogs. Correct Answer All conclusions follow

Using the statement 1, 2 and 3, we get the following least possible Venn diagram respectively:

[ alt="SSC CGL Live Test 1d (1) reviewed Images Q7" src="//storage.googleapis.com/tb-img/production/16/03/SSC%20CGL%20Live%20Test%201d%20%281%29%20reviewed_Images_Q7.PNG" style="height:144px; width:462px">

From the above three Venn diagram, we draw the least possible Venn diagram with all 3 statements together as,

[ alt="SSC CGL Live Test 1d (1) reviewed Images Q7a" src="//storage.googleapis.com/tb-img/production/16/03/SSC%20CGL%20Live%20Test%201d%20%281%29%20reviewed_Images_Q7a.PNG" style="height:149px; width:151px">

Conclusions:

(I) All dogs are crows → Clearly true.

(II) Some crows are dogs→Clearly true.

(III) Some crows are rats→Clearly true.

(IV) All rats are dogs→Clearly true.

Hence all the given conclusions follows.

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