Question 10
In Part I of the Thailand Mathematics Contest (TMC), each of questions 1–12 has exactly one correct choice among A–E. A correct answer earns 4 points, a blank earns 1 point, and an incorrect answer earns 0. Marking more than one choice earns 0. Students should choose one choice or leave it blank. What is the probability that Jack gets nonzero points on question 6?