In a high school geometry class, only half of the class earned a passing grade.  Out of all the students, 45% studied and passed.  What is the probability of the someone having studied, given that they passed?

The chance of a student passing an exam is 20%. The chance of a student passing the exam and getting above 90% marks in it is 5%. GIVEN that a student pass the examination, the probability that the student gets above 90% marks is:

The probabilities that a student passes in Mathematics, Physics and Chemistry are,m p andcrespectively. Of these subjects, the student has a 75% chance of passing in at least one, a 50% chanceof passing in at least two, and a 40% chance of passing in exactly two. Then

The probability that a student will pass Math is 40% and the probability that a student will pass English is 50%. There is a 20% chance that a student will pass both Math and English. What is the probability that a student will pass either Math or English (round your answer to one decimal place)?

In a class, 40% students failed in history and 30% failed in geography. If 15% of the students failed in both the subjects. What percentage of students passed in both the subjects?45%50%65%70%

In an examination 45% of students passed in math, 36% passed in English and 19% passed in both the subjects. What is the percentage of the students who failed in both the subjects?62%48%38%12%