To determine which statement must be true given the rankings of Raman and Ankit, we first need to analyze the information:
- Seven students: Priya, Ankit, Raman, Sunil, Tony, Deepak, and Vicky.
- No two students get similar marks.
- Vicky always scores more than Priya.
- Priya always scores more than Ankit.
- Either Raman scores the highest and Tony gets the least, or Sunil scores the highest and Deepak or Ankit scores the least.
Given that Ankit is ranked first and Raman is ranked second, we need to understand the original conditions:
- If Raman scored highest, then normally Tony should be last, but this is not the case with Ankit being the first.
- If Sunil scored the highest, then either Deepak or Ankit should be last; this also is not the case.
Since Ankit is ranked first, this does not align with either scenario presented for who scores the highest and who the last is supposed to be. Hence, no further deductions can be made about the third rank based on the given scenarios and conditions.
Therefore, none of the options for the third position is compulsory. Our answer is:
None of these.