Read the following information carefully and answer the question given below.
Eight persons- Arun, Renu, Keerthi, Balaji, Abarna, Senthil, Ajitha and Rajesh sit in a row having chairs numbered one to eight in ascending order from left to right. They all are facing north direction. Keerthi sits on the chair numbered six. There are exactly two persons between Keerthi and Arun. Renu and Rajesh always sit adjacent to each other. Ajitha sits adjacent to neither Arun nor Keerthi. Abarna never sits on a chair having an odd number on it. Neither Renu nor Rajesh sits on chair numbered four. There is only one person between Senthil and Renu. Abarna sits on the right (not an immediate right) of Balaji, and Balaji never sits adjacent to Senthil.
How many persons sit between Renu and Arun?

Correct option is B

Eight persons— Arun, Renu, Keerthi, Balaji, Abarna, Senthil, Ajitha and Rajesh.
1. Keerthi sits on the chair numbered six.
2. There are exactly two persons between Keerthi and Arun.
3. Ajitha sits adjacent to neither Arun nor Keerthi.
4. Abarna never sitson a chair having an odd number on it.
5. Neither Renu nor Rajesh sits on chair numbered four.
6. Renu and Rajesh always sit adjacent to each other.
7. There is only one person between Senthil and Renu.
In Case 1, if Renu is at 2nd position and Senthil is at 4th position, then the above given condition is satisfied
In Case2, if Renu is at 7th position and Senthil is at 5thposition, then the
satisfied.
8. Abarna sits on the right (not an immediate right) of Balaji, Balaji never sits adjacent to Senthil.
In Case1, there is no position left for Balaji, such Abarna sits on the right (not an immediate right;
So, Case1is eliminated.
Now, only Ajitha is left.
But, in Case2 there is no position left that Ajitha can occupy.
So, Case2 is eliminated.
In Case3, 1st row is vacant, which Ajitha will occupy.
So, the final arrangement is:

So, 3 person sits between Arun and Renu