Answer:
The probability that a student chosen randomly from the class passed the test and completed the homework is 3/5
Explanation:
No. of students passed the test = 21
No. of students completed the assignment = 22
No. of students who passed the test and also completed the assignment = 18
Total no. of students = 30
We are supposed to find the probability that a student chosen randomly from the class passed the test and completed the homework
So, probability that a student chosen randomly from the class passed the test and completed the homework =

Probability that a student chosen randomly from the class passed the test and completed the homework =

Hence the probability that a student chosen randomly from the class passed the test and completed the homework is 3/5