Seven people – Praful, Ganesh, Ravi, Sandeep, Dilip, Umesh and Lucky – are
sitting in a row, not necessarily in the same order. Praful is to the left of Ganesh, who is to
the immediate left of Sandeep. There is exactly one person between Ravi and Dilip. Umesh is
at the extreme left end of the row. Lucky is sitting two places away to the left of Ganesh.
