Sunita travels 6 Km towards north east. Then travels 9 Km towards west. From there, she goes 6 Km south-west and finally goes 3 Km towards east. How far is she from her initial position?
A series is given, with one number missing. Choose the correct alternative from the given ones that will complete the series. -7.25, -5.75, -4.25, -2.75, ? , 0.25