Question

Seven persons namely – Reena, Heena, Gautam, Ziyana, Hari, Rohit and Jyoti are sitting in a row not necessary in same order in such a way that some are facing north while others are facing south. Reena sits third to left of Hari, either of them sits at end of the row and Rohit sits immediate left of Reena. Rohit sits second to left of Ziyana, who is facing south. How many person sits facing south?
I. Person sitting immediate neighbor of Ziyana sits fourth to right of Jyoti. Person sitting at end of the row sits facing in opposite direction and Gautam sits third from right end. Hari faces north direction.
II. Person sitting immediate left of Rohit sits fourth to right of Jyoti and Gautam sits second to left of Hari.

Q: Answer-Seven persons namely – Reena, Heena, Gautam, Ziyana, Hari, Rohit and Jyoti are sitting in a row not...

We have Reena sits third to left of Hari, either of them sits at end of the row, which means we get two possibilities, in case 1 Hari sits facing north at right end and in case 2 Reena sits at extreme left end. Rohit sits immediate left of Reena and Rohit sits second to left of Ziyana, who sits facing south, that means case 2 is not valid, in case 1a Reena sits facing south and in case 1b Reena sits facing north. Based on above given information we get From I We have Person sitting immediate neighbor of Ziyana sits fourth to right of Jyoti, which means Jyoti must sits facing south. Person sitting at end of the row sits facing in opposite direction, which means person at left end sits facing south. Gautam sits third from right end, which means case 1a is not valid. Based on above given information, we have following result Case1a Gautam sits third from right end, this condition is not satisfied so rejected. Since, direction facing of Heena, Rohit and Gautam is not known, thus we cant determine required result. Hence, statement I is not sufficient. From II We have Person sitting immediate left of Rohit sits fourth to right of Jyoti, which means in case 1a Rohit sits facing south and in case 1b Rohit sits facing north. Gautam sits second to left of Hari, which means case 1a is not valid. Based on above given information, we get following result Case-1b Since, direction of Heena and Gautam is not known, thus result cant be determined. Hence, statement I and II together are not sufficient.

A If the data in Statement I alone is sufficient to answer the question, while the data in Statement II alone is not sufficient to answer the question

B If the data in Statement II alone is sufficient to answer the question, while the data in Statement I alone is not sufficient to answer the question

C If the data either in Statement I alone or in Statement II alone is sufficient to answer the question.

D If the data in both the Statements I and II together are not sufficient to answer the question.

E If the data in both the Statements I and II together are necessary to answer the question.