Directions: Study the following information carefully to answer the given questions.

There are 7 students (Arnav, Bhuvan, Gagan, Elvish, Praveen, Pratik and Sakshi) live on a 7 floor building but not in this order. They all gave IBPS PO Prelims and Mains and obtained different scores. The cutoff for prelims exam is 53 out of 100 and for mains exam is 88 out of 225. All students qualified in Prelims as well as Mains exam.

Note: Prelims highest and lowest score obtained by any of the students is 78 and 54 respectively, Mains highest and lowest score obtained by any of the students is 120 and 88 respectively.

There are two students live between Elvish and Sakshi, who got 9 marks above from prelims cutoff. Praveen got least marks in prelims among all the students. Pratik and Arnav lives adjacent to each other. There are only one student between Gagan and Sakshi. Elvish got one more mark from Sakshi in his prelims exam. There are two students live between Praveen and the one who scores 88 marks in mains exam. Neither Pratik nor Bhuvan got 88 marks in their mains exam. Sakshi lives on even number floor. Praveen lives just below the one who got exact double marks in his/her mains from his/her prelims exam and Praveen got 90 marks in his mains exam. Bhuvan does not live on first floor and got 58 marks in his prelims exam. Pratik got highest marks in prelims among all the students. There are two students live between the one who got 66 marks in prelims and Praveen. The difference of Prelims and mains marks of elvish is equal to the marks obtained by Gagan in his prelims exam. Students live between Arnav and Praveen is same as Sakshi and Elvish, who got highest marks in mains exam among all the students. The difference of prelims and mains exam marks of Pratik is the square of the odd prime number and the difference of prelims and mains exam score of Sakshi is the square of the even number. One student got 115 marks in mains exam. Elvish is above Bhuvan and Bhuvan is above Pratik on one of the floor number.