Bissoy.com
Doctors Medicines MCQs Q&A

In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. All coal are black. II. All black are red. Conclusions: I. All coal are red. II. All red are coal. III. No red is coal.

In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. All coal are black. II. All black are red. Conclusions: I. All coal are red. II. All red are coal. III. No red is coal. Correct Answer Only I

Consider the following least possible Venn diagram,

[ alt="13Sep 2" src="//storage.googleapis.com/tb-img/production/18/07/13Sep_2.PNG" style="height:214px; width:218px">

Conclusions:

I. All coal are red → True (It is definitely true as all coal are clearly red).

II. All red are coal → False (It is possible but not definite).

III. No red is coal → False (It is definitely false as all coal are red).

Hence, only I follows.

Related Questions

In each of the following question below are given some statements followed by some conclusion, Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements, seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements, Statements: I. All pages are yellow. II. All yellow are newspapers. III. Some newspapers are national. Conclusions: I. Some national are yellow II. Some newspapers are pages. III. No page is national.
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. All plates are cups. II. Some cups are red. III. All red are black. Conclusions: I. Some plates are black. II. All black are cups. III. Some cups are red and some cups are plates.
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. Some black are red. II. Some red are cup. III. Some cup are plates. Conclusions: I. All black are cups. II. Some black are plates. III. No black are plates.
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. Some pen are black. II. Some pen are blue. III. No black is red. Conclusions: I. No pen is red. II. Some blue are black. III. Some black are pens.
In the following question below are given three statements followed by four conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. Some Toy are Red. II. No Red is a Pink. III. All Pink are Black. Conclusions: I. Some Red are Black. II. Some Black being Toy is a possibility. III. All Toy are Pink. IV. Some Pink being Toy is a possibility.
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements Statements: I. All blue are black. II. Some red are black. Conclusions: I. All red are black. II. No red is black.
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. Some blue are black. II. Some black are red. Conclusions: I. No red is black. II. Some black are blue.
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. Some red are black. II. No red is green. Conclusions: I. Some black are green. II. Some black are red.
In the question given below are given two statements followed by a few conclusions a option. You have to take the two given statements to be true even if they seem to be at variance with commonly known facts. Read all the conclusions and then decide which of the given conclusions basically follows from the tow given statements disregarding commonly known facts. Statements: A. All rivers are clouds B. Some animals are rivers Conclusion: 1. Some rivers are animals 2. Some clouds are rivers 3. All clouds are rivers 4. All animals are clouds A. Conclusion 1 and 2 follow B. Conclusion 1, 2 and 3 follow C. Conclusion 1 and 3 follow D. Conclusion 2, 3 and 4 follow
In the following question below are given some statements followed by some conclusions. Taking the given statements to be true even if they seem to be at variance from commonly known facts, read all the conclusions and then decide which of the given conclusion logically follows the given statements. Statements: I. Some blue are black. II. Some black are red. Conclusions: I. No blue is black. II. Some black are blue.