MCQ Subject: Quantitative Aptitude

Determine if the following line segments can form a triangle: 5 cm, 7 cm, and 12 cm. Which statement is correct?

A test for a disease has a 95% accuracy rate for both positive and negative results. If 1% of the population has the disease, what is the probability that a person testing positive actually has the disease?

For the quadratic equation ax² + bx + c = 0 to have one positive and one negative root, which of the following must be true?

A quadratic equation ax² + bx + c = 0 has distinct real roots if its discriminant satisfies which condition?