Question

out of 40 students in a 9 class, 28 students passes in the annual examination. if a student in selected at random, then find the probability that student has failed in the exam

Answer 1

p(failed)=12/40=3/10

Answer 2

Failed students =40-28= 12 students
Probability(failed students) = failed students /
Total students
P( failed students) = 12/
40
= 0.3