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CA Foundation · Quantitative Aptitude · Number Series, Coding-Decoding and Odd Man Out

In a certain code, a three-digit number is formed from a word by taking, for each letter, the sum of its alphabet position digits reduced to a single digit (digital root). For example, JAB: J=10 gives 1, A=1, B=2, so JAB is coded as 112. Using the same rule, what is the code for the word SKY?

The question is flawed and has no correct option.

  1. A827Correct
  2. B836
  3. C728
  4. D926

Explanation

S=19 and 1+9=10, and 1+0=1, so S gives 1, not 8. Recomputing: S=19 gives 1, K=11 gives 2, Y=25 gives 7. The code is 127, but this is not offered, so the rule must be read carefully. The rule given is the digit sum reduced to a single digit, which gives S=1, K=2, Y=7, so 127.

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