roughworks

UCEED 2019

0/85
UCEED2019Q26·msq·Hard

The figure shows four road networks. Which of these four road networks can be traversed by a traveller, such that the following challenge can be satisfied: 'The traveller must cover all the roads in the network. She is allowed to visit a city more than once, but she is not allowed to travel on any road more than once. Also, the traveller must come back to the city where she starts.'

The figure shows four road networks. Which of these four road networks can be traversed by a traveller, such that the following challenge can be satisfied: 'The traveller must cover all the roads in the network. She is allowed to visit a city more than once, but she is not allowed to travel on any road more than once. Also, the traveller must come back to the city where she starts.'