CAT 2019 Slot 2 QA Q13 Equations

Question 13 of the Quantitative Ability (QA) section, CAT 2019 Slot 2, with CAT's official answer.

Let A be a real number. Then the roots of the equation x2 - 4x - log2A = 0 are real and distinct if and only if
  1. A
    A < \(\frac{1}{16}\)
  2. B
    A > \(\frac{1}{8}\)
  3. C
    A > \(\frac{1}{16}\)
  4. D
    A < \(\frac{1}{8}\)

Answer: (C) A > 1/16 Equations MCQ

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Same concept in other years

See every question on Discriminant conditions for real, distinct or no real roots.

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