Question

find the prbabilty that the seleted student had scored less than 40 marks.​

Answer 1

Answer:

Total number of students are,

3+12+18+10+7=50

The number of students scored less than 40 marks are,

3+12=15

So the Probability of the students who scored less than 40 marks is = 15/50=3/10 = 0.3