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BEBRAS 2018 Grade 7-8 Round 2 Ext Question 15

BEBRAS · BEBRAS 2018 Grade 7-8 Round 2 Ext

Question 15

Moff sends Manu a message using logs joined by ropes. Each log has one,two or three neighbors. Words appear only on logs with one neighbor. Exactly one log has two neighbors; using it as the root allows the tree to be arranged as shown. The example reads “I am a beautiful beaver” from left to right in its meaningful arrangement.

Question illustration

For the letter tree below, which message cannot be obtained?

Question illustration
  1. Doem
  2. Demo
  3. Omed
  4. Medo