To pass an examination, a student must score 40 marks or more. If the marks obtained are \(s\), which is the correct inequality?

Correct answer: \(s\ge 40\)

“40 or more” means that the score may be exactly 40 or any value greater than 40, so the correct inequality is \(s\ge 40\). Option A is incorrect because \(s>40\) excludes a score of exactly 40. Exam tip: use \(\ge\) for “or more” and \(\le\) for “or less.”