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BEBRAS 2026 Grade 3-4 Round 2 Ext Question 3

BEBRAS · BEBRAS 2026 Grade 3-4 Round 2 Ext

Question 3

Alice and Bob are spies. They use the alphabet ABCDEFGHIJKLMNOPQRSTUVWXYZ and encrypt each letter by replacing it with the next letter; Z becomes A. The examples are HELLO→IFMMP and CALL ZARA→DBMM ABSB.

Question illustration

Bob wants to send CHOCOLATE. Which encrypted message should he send?

Question illustration
  1. DIPDPMBUG
  2. DIPDPNBUF
  3. DIPDPMBUF
  4. DGPDPMBUF