Question

If NOR is coded as 2-3-6, then how should REST be coded in the same code language?

• A. 6-19-6-7
• B. 5-19-5-8
• C. 6-19-7-8
• D. 6-18-5-8

Hint:

Try numbering the alphabet starting from M as 1.

Answer 1

The Correct Option is C

Step 1: Decode the rule from NOR = 2-3-6.
Write out the normal alphabet positions: N is the 14th letter, O is the 15th letter and R is the 18th letter. Comparing these to the given code 2-3-6, we see \(14 - 12 = 2\), \(15 - 12 = 3\) and \(18 - 12 = 6\). So for every letter from M to Z, the code number is simply the normal alphabet position minus 12.

Step 2: Extend the rule to the full alphabet.
Since codes must stay between 1 and 26, once we pass Z the counting wraps back to A. This means M (position 13) codes as 1, and the count rises up to Z (position 26) coding as 14, after which A codes as 15, B as 16, and so on up to L coding as 26. In short: for letters M through Z, code = position - 12; for letters A through L, code = position + 14.

Step 3: Apply the rule to R, E, S, T.
R is the 18th letter, so its code is \(18 - 12 = 6\). E is the 5th letter, which falls in the A-L group, so its code is \(5 + 14 = 19\). S is the 19th letter, so its code is \(19 - 12 = 7\). T is the 20th letter, so its code is \(20 - 12 = 8\).

Final Answer:
REST is coded as 6-19-7-8. \[ \boxed{6\text{-}19\text{-}7\text{-}8} \]