Question

In a code language BANK is coded as DCPM. Then which word is coded as ECET?

• A. CACR
• B. CACT
• C. CACM
• D. CACP

Hint:

To decode a word when coding uses \(+2\), move every coded letter \(2\) steps backward.

Answer 1

The Correct Option is A

Step 1: Understanding the Concept:
This is a decoding problem using the rule established in the previous questions. We are given the coded word and must find the original word.

Step 2: Key Formula or Approach:
The encoding rule is to shift each letter forward by 2 positions. Therefore, the decoding rule is to shift each letter backward by 2 positions. Decoding Rule: Coded Letter \(\to\) Letter - 2 positions.

Step 3: Detailed Explanation:
The coded word is ECET. We apply the decoding rule to each letter: - E (5): \(5 - 2 = 3\). The 3rd letter is C. - C (3): \(3 - 2 = 1\). The 1st letter is A. - E (5): \(5 - 2 = 3\). The 3rd letter is C. - T (20): \(20 - 2 = 18\). The 18th letter is R. Combining the decoded letters, the original word is CACR.

Step 4: Final Answer:
The word coded as ECET is CACR, which corresponds to option (A).