1. The author of the novel 'Ancillary Justice' is Charles Stross. 2. The author of the novel 'Air' is Ann Leckie. 3. The author of the novel 'Mission Earth' is L. Ron Hubbard.
A woman walks 3 km North, then turns West and walks 4 km, then turns South and walks 7 km, then turns to her left and walks 4 km. Where is she now with reference to her starting position?
The weights of 4 boxes are 20, 40, 60 and 90 kilograms. Which of the following cannot be the total weight, in kilograms, of any combination of these boxes and in a combination a box can be used only once?