Quote Originally Posted by rajasaranam
anjali2005,

logical deduction leads me into a solution like this

The girl should pick up a pebble from the bag and throw or hide it and ask the moneylender to look into the bag for the remaining pebble. when looked upon, the bag will contain a black pebble leading to a deduction that the girl had picked up a white pebble she need not marry him and her fathers debt would be forgiven
wow answer is correct