If A = 5, B = 6, C = 7, D = 8, and so on, which word do the numbers 17, 19,…
2011
If A = 5, B = 6, C = 7, D = 8, and so on, which word do the numbers 17, 19, 20, 9, 8 represent?
Answer: B. Moped — ConceptIn this code, each letter is assigned a number four greater than its usual alphabetical position: A has position 1 but is coded as 5, B has position 2…
- A.
Plane
- B.
Moped
- C.
Motor
- D.
Tonga
Attempted by 2 students.
Show answer & explanation
Correct answer: B
Concept
In this code, each letter is assigned a number four greater than its usual alphabetical position: A has position 1 but is coded as 5, B has position 2 but is coded as 6, and so on.
Therefore, to decode a number, subtract 4 and convert the result to the corresponding alphabet position.
Application
17 - 4 = 13, and the 13th letter is M.
19 - 4 = 15, and the 15th letter is O.
20 - 4 = 16, and the 16th letter is P.
9 - 4 = 5, and the 5th letter is E.
8 - 4 = 4, and the 4th letter is D.
The decoded letters form M-O-P-E-D, that is, MOPED.
Cross-check
Encoding M-O-P-E-D again by adding 4 to the positions 13, 15, 16, 5, and 4 gives 17, 19, 20, 9, and 8, exactly the given sequence.
Hence, the numbers represent MOPED.