Question 16
The map has 12 intersections. People at intersections can see all other occupied intersections on the same straight street. For example,I8 can see I2,I4,I5,I7,I9,I11. Amy,Ben,Clover,Dan,Elsa,Fred occupy six different intersections.
- Dan,Amy,Fred are the vertices of a triangle made of three street segments.
- Dan sees only Amy and Fred.
- Elsa sees only Amy and Clover.
- Amy sees Ben at the next intersection beyond Fred on the same street.
- Clover cannot see Ben or Fred.
- Nobody occupies I10.
Find Clover’s intersection label.
- Dan,Amy,Fred are the vertices of a triangle made of three street segments.
- Dan sees only Amy and Fred.
- Elsa sees only Amy and Clover.
- Amy sees Ben at the next intersection beyond Fred on the same street.
- Clover cannot see Ben or Fred.
- Nobody occupies I10.
Find Clover’s intersection label.