1,030 views

Given below are two statements and two conclusions.

• $\text{Statement 1}$: All purple are green.
• $\text{Statement 2}$: All black are green.
• $\text{Conclusion I}$: Some black are purple.
• $\text{Conclusion II}$: No black is purple.

Based on the above statements and conclusions, which one of the following options is logically $\text{CORRECT}$?

1. Only conclusion $\text{I}$ is correct
2. Only conclusion $\text{II}$ is correct
3. Either conclusion $\text{I}$ or $\text{II}$ is correct
4. Both conclusion $\text{I}$ and $\text{II}$ are correct
Migrated from GO Electronics 1 year ago by Arjun

## 1 Answer

Best answer

Given statements are:

• $\text{Statement 1}$: All purple are green.

• $\text{Statement 2}$: All black are green.

A conclusion “should always be true”. We can try to make the complement of the conclusion satisfiable (by drawing a Venn diagram) and if we can’t then the conclusion is VALID or else NOT Valid.

For the first conclusion “Some black are purple” – the complement is “No black is purple”. It is possible as shown below. So the given conclusion is NOT valid.

For the second conclusion “No black is purple” – the complement is “Some black is purple”. It is possible as shown below. So the given conclusion is NOT valid.

So, options A, B, and D are false. Option C is correct because we cannot make a Venn diagram making both the conclusions false. If we make conclusion $1$ false, the Venn diagram will satisfy conclusion $2$ and vice versa.

So, the correct answer is $(C).$

Answer:

3 votes
1 answer
1
3 votes
1 answer
2
13 votes
9 answers
3
4 votes
3 answers
4