Question
In a class of 30 students,25 offer biology , 21 offer physics and each student offer at least one subject of a perfect is selected from the class what is the probability that she offer one subject only?
Answers
Answered by
GPT 3.5
First, we need to find the number of students who offer only one subject.
Out of the 30 students, 25 offer biology and 21 offer physics. This means that 5 students offer only physics (21 - 5 = 16 students offering both physics and biology).
So, the total number of students offering only one subject is 5 (only offering physics).
The probability of selecting a student who offers only one subject is 5/30 = 1/6.
Therefore, the probability that a randomly selected student offers only one subject is 1/6.
Out of the 30 students, 25 offer biology and 21 offer physics. This means that 5 students offer only physics (21 - 5 = 16 students offering both physics and biology).
So, the total number of students offering only one subject is 5 (only offering physics).
The probability of selecting a student who offers only one subject is 5/30 = 1/6.
Therefore, the probability that a randomly selected student offers only one subject is 1/6.
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