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Sagot :
Answer:
(c) neither
Step-by-step explanation:
A Hamiltonian Path visits every node once. A Hamiltonian Circuit is a loop that visits every node once.
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This graph cannot have a Hamiltonian Circuit, because it has a node with degree 1. It cannot be part of a loop.
The graph cannot have either a Hamiltonian Path or Circuit, because the nodes in the two triangles cannot all be visited only once. Getting into and out of the triangle requires visiting a node twice.
This graph has neither a path nor a circuit.
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