number theory

if in an exam percentile score of a student is given in the format PQ.RST where T wasnatural number for atleast 1 candidate and further it was known that no approx. was made while determining the percentile score of any candidate

1.Number of candidate who appeared for the exam is atleast...............?

{100000,10000,64,32}

2. Number of candidates who appeared for the test is not more than 87654

and no two candidates secured same score, find the atmost number of candidates who could have appeared for the exam............?

{80000,64000,50000,32000}

sir this is also an AIMCAT question but I couldn't do it.....anyone help me please.......... note

Percentile score=

no. of students below you/ no. of students who attended the exam *100