Sol. Students between R and T are= 20-(4+5)+1=12
Sol. Surekha fulfills all conditions, so she is to be selected.
Sol. Simiran Singh does not fulfill condition (v) or (2), so she is not to be selected.
Sol. Tinku Sharma does not fulfill condition (iii) so he is not to be selected.
Sol. Nanhi fulfills condition (2) instead of (v), so her case is to be referred to the Chairman.
Sol. Kajari fulfills condition (1), so his case is to referred to the ED.