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In a code: 'X @ Y' means X > Y; 'X # Y' means X ≥ Y; 'X $ Y' means X = Y; 'X % Y' means X < Y; 'X & Y' means X ≤ Y. Given the statements 'D # E', 'E @ F' and 'F $ G', which of the following is definitely true?

Competition practiceInequalities
  • AE $ G
  • BG @ E
  • CD @ G
  • DF @ D

Step-by-Step Solution

Decoding gives D ≥ E, E > F and F = G, i.e. D ≥ E > F = G, so D > G, written 'D @ G'.
Answer: C) D @ G

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