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Which of the following is in descending order?

Which of the following is in descending order?

  • A.
    (frac{9}{10} frac{4}{5} frac{3}{4} frac{17}{20})
  • B.
    (frac{4}{5} frac{9}{10} frac{3}{4} frac{17}{20})
  • C.
    (frac{9}{10} frac{17}{20} frac{4}{5} frac{3}{4})
  • D.
    (frac{4}{5} frac{9}{10} frac{17}{20} frac{3}{4})
Correct Answer: Option C
Explanation

(frac{9}{10} frac{4}{5} frac{3}{4} frac{17}{20}) = (frac{18, 16, 15, 17}{20})
(frac{4}{5} frac{9}{10} frac{3}{4} frac{17}{20}) = (frac{16, 18, 15, 17}{20})
(frac{9}{10} frac{17}{20} frac{4}{5} frac{3}{4}) = (frac{18, 17, 16, 15}{20})
∴ (frac{9}{10}; frac{17}{20}; frac{4}{5}; frac{3}{4}) is in descending order.