Question

Of the students attending a lecture, 50% could not see what was being written on the blackboard, 40% could not hear what the lecturer was saying; particularly unfortunate 30% feel into both of these categories. What is the probability that a student get random was able to see and hear satisfactory?​

Answer 1

Answer:

10 percent answer

mark as brainliest

Answer 2

Answer:

if the answer is correct please give me a star

Step-by-step explanation:

100% because the lecture: 50% could not see but they can hear the lecture and 40% can't hear but they can see on the black board and 30% also can't see or hear but they can listen, and others can see. The lecture.