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In a certain code, how is 'CAT' written? Statement I: In that code, each letter is replaced by the letter three places after it in the alphabet. Statement II: In that code, 'DOG' is written as 'GRJ'.

Competition practiceData Sufficiency
  • AStatement I alone is sufficient but Statement II alone is not
  • BEither statement alone is sufficient
  • CStatement II alone is sufficient but Statement I alone is not
  • DBoth statements together are needed (neither alone is sufficient)

Step-by-Step Solution

By I the +3 rule gives CAT = FDW. By II, DOG to GRJ reveals the same +3 shift, again giving FDW. Each alone suffices.
Answer: B) Either statement alone is sufficient

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