Seven friends Pradeep, Ashu, Rishi, Sam, Tina, Uma and Vicky's score in an exam are given. No two students get the same marks. Pradeep scored less than Vicky but more than Ashu. Rishi and Tina scored the highest and least marks but not necessarily in the same order. Uma's score was less than only Rishi's score. Sam's score was higher than only one person. Whose marks were in between the marks of Ashu and Tina?