CAT Quantitative Ability Questions | CAT Functions questions

CAT/1999

Question . 57

If x & y are real numbers, the functions are defined as f (x, y) = | x + y |,F (x, y) = –f (x, y) and G (x, y) = –F (x, y) . Now with the help of this information answer the following questions.

What will be the final value given by the function G (f (G (F (f (2, –3),0) – 2),0), -1)?

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Method of solving this CAT Quantitative Ability Question from Functions question