Q20Section I (Objective (Q1–Q80))20 of 80

Probability — probability via a quadratic discriminant

A number $X$ is chosen at random between $0$ and $6$ , and another number $Y$ is chosen at random between $0$ and $9$ . What is the probability that the equation $Z^2-XZ+Y=0$ has real roots?

Pick an option to check your answer. In a mock test a wrong answer here costs 0.83 mark.

Keyboard: A–D answer · S solution · ←/→ previous/next