Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Probability

Question:
If \(a\) is an integer lying in \([-5,30]\), then the probability that the graph \(y=x^2+2(a+4)x-5a+64\) is strictly above the \(x-\) axis is
Options:
\(\frac{2}{9}\)
\(\frac{3}{9}\)
\(\frac{9}{2}\)
\(\frac{1}{2}\)
Correct Answer:
\(\frac{2}{9}\)
Explanation:
Favourable cases \(=8\), Total cases \(=36\)