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

In a certain code language, each letter is replaced by the letter that is its mirror position in the alphabet (A becomes Z, B becomes Y, C becomes X, and so on). How will the word TAX be written in this code?

TAX is coded as GZC. In a mirror alphabet each letter's position and its code's position add up to 27, so T (20) becomes G (7), A (1) becomes Z (26), and X (24) becomes C (3).

  1. AGZCCorrect
  2. BGAC
  3. CHZC
  4. DGZD

Explanation

Mirror position means the letter's value plus the code's value equals 27. T (20) becomes 7 = G. A (1) becomes 26 = Z. X (24) becomes 3 = C. So TAX is written as GZC. HZC is wrong because it takes T as 19 instead of 20.

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