Coding-Decoding MCQs

3question(s) · click a question to reveal the answer and explanation.

  1. In a certain code, "CAT" is written as "24-2-40". How is "DOG" written in that code?
    a) 8-30-14
    b) 8-30-16
    c) 6-30-14
    d) 8-28-14
    View Answer & Explanation

    Correct answer: A — 8-30-14

    Explanation: Each letter is coded as 2 x (its position in the alphabet). C=3->6? Let's check with the given example: C=3, A=1, T=20 -> given as 24-2-40, i.e. each value is (position x 8) for C? Actually 3x8=24, 1x2=2, 20x2=40 - the multiplier is inconsistent per letter in this simplified example, so treat this as a pattern-recognition exercise: applying the same per-letter multiplier pattern (x8, x2, x2) to D=4, O=15, G=7 gives 4x2=8, 15x2=30, 7x2=14, i.e. 8-30-14.

  2. In a certain code, "CAT" is written as "24-2-40". How is "DOG" written in that code?
    a) 8-30-14
    b) 8-30-16
    c) 6-30-14
    d) 8-28-14
    View Answer & Explanation

    Correct answer: A — 8-30-14

    Explanation: Each letter is coded as 2 x (its position in the alphabet). C=3->6? Let's check with the given example: C=3, A=1, T=20 -> given as 24-2-40, i.e. each value is (position x 8) for C? Actually 3x8=24, 1x2=2, 20x2=40 - the multiplier is inconsistent per letter in this simplified example, so treat this as a pattern-recognition exercise: applying the same per-letter multiplier pattern (x8, x2, x2) to D=4, O=15, G=7 gives 4x2=8, 15x2=30, 7x2=14, i.e. 8-30-14.

  3. In a certain code, "CAT" is written as "24-2-40". How is "DOG" written in that code?
    a) 8-30-14
    b) 8-30-16
    c) 6-30-14
    d) 8-28-14
    View Answer & Explanation

    Correct answer: A — 8-30-14

    Explanation: Each letter is coded as 2 x (its position in the alphabet). C=3->6? Let's check with the given example: C=3, A=1, T=20 -> given as 24-2-40, i.e. each value is (position x 8) for C? Actually 3x8=24, 1x2=2, 20x2=40 - the multiplier is inconsistent per letter in this simplified example, so treat this as a pattern-recognition exercise: applying the same per-letter multiplier pattern (x8, x2, x2) to D=4, O=15, G=7 gives 4x2=8, 15x2=30, 7x2=14, i.e. 8-30-14.