Dollar drops against rupee

The US dollar dropped against the rupee at 66.22/23 per dollar but the pound sterling finished higher at Rs 95.22/24 per pound at the close of the Interbank Foreign Exchange market today.
Following are the Interbank Forex and RBI rates:
(In Rs Per Unit)
Unit Interbank RBI Reference US Dollar 66.22/23 US Dollar Rs.66.2406 Pound Sterling 95.22/24 Euro Rs.75.2758 Euro 75.30/32
Japanese Yen (100) 60.