Among 35 students in a class, 20 of them earned A's on the midterm exam, 13 earned A's on the nal exam, and 12 did not earn A's on either examination. What is the probability that a random

The correct answer is "".

Step-by-step explanation:

According to the question,

Number of students,

= 35

A ! mid term A,

B : final A,

Didn't start,

Now,

⇒

then,

⇒

hence,

The probability will be:

⇒

⇒                

0.85% : )

step-by-step explanation: