Many years ago there was a small village, there a farmer was owing a large some of money to village moneylender. Due to misfortune farmer was unable to pay the amount. Moneylender always fancied farmers daughter so he purposed a bargain. He said he would forget farmer's debt if he could marry farmer's daughter. Both farmer and his daughter were horrified by this proposal. So, moneylender suggested a way to decide the matter. He suggested that he would put a black pebble and a white pebble into an empty money bag and then girl have to pick one pebble from the bag. Condition set was - if she picked black pebble the she would become moneylender's wife and farmer's debt would be forgiven and if she pick white pebble then she doesn't need to marry moneylender and her father's debt would still be forgiven. She wasn't left with option to refuse to pick a pebble as if she does so, then her father would be thrown into jail. On the day of decision all were standing on a pebble strewn path. As money lander proposed he bent over to pick two pebbles. As he picked pebbled, girl noticed that he had picked two black pebble and put them in the bag. Now, money lander asked girl to pick a pebble from the bag. Even after knowing the dirty trick of money lander girl had to pick pebble so, she put her hand into money bag and drew out a pebble. Without looking at it, she fumbled and let it fall on the pebble path where it immediately became lost among other pebbles. "Oh! how clumsy of me." Girl said. "But not to worry, if you look into bag for pebble left, you will be able to tell which one I picked." After this moneylender didn't dared to admit his dishonesty. By her quick thinking girl changed an impossible situation into extremely advantageous one. 
Most problems have solutions. We just need to think in different way. 