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RAS question

If CAT = 24 and DOG = 26, then what is the value of FOX?

Correct answer: (A) 45.

Using the alphabet positions A=1 to Z=26, FOX has the value 45 because F=6, O=15 and X=24.

  1. (A)

    45

  2. (B)

    39

  3. (C)

    42

  4. (D)

    51

Explanation

The coding pattern is simple alphabetical addition. The cited NCERT primer shows the English alphabet in order from A through Z, which supports assigning letters their serial positions. The given examples confirm the rule: CAT becomes C(3) + A(1) + T(20) = 24, and DOG becomes D(4) + O(15) + G(7) = 26. Applying the same rule to FOX gives F(6) + O(15) + X(24). The sum is 6 + 15 + 24 = 45, so the required value is 45.

Why the other options are wrong

  • (B) 39 is too low because it does not include the full positional value of X as 24 in F(6) + O(15) + X(24).
  • (C) 42 misses three from the correct alphabet-position sum, since F, O and X add to 45, not 42.
  • (D) 51 is too high because the verified pattern is direct addition of letter positions, and 6 + 15 + 24 equals 45.

Concept

This tests alphabet coding, a recurring reasoning topic in RAS because it checks whether the candidate can identify a given code pattern and apply it consistently. The examples are part of the rule, so the safest method is to verify the pattern on CAT and DOG before solving FOX.

Source

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