In a group of 40 students , 23 take the AP Psycholgy class , 18 take the AP Calculas
class, and 8 take both classes . What is the probability that a student takes AP
Psychology or AP Calculus ?

In a group of 30 students, 20 take French, 15 take Spanish, and 5 take neither language. How many students take both French and Spanish?

The following table shows the blood groups of 40 students of a class. One student of the class is chosen at random . What is the probability that the chosen student has blood group (i) O ? (ii) AB ?

In a medical examination of students of a class , the following blood groups are recorded : From this class , a student is chosen at random . What is the probability that the chosen student has blood group AB ?

The table given below shows the months of birth of 36 students of a class : A student is chosen at random from the class . What is the probability that the chosen student was born in October ?

In a class of 100 students 60 drinks tea. 50 drink coffee and 30 drink both .A students from this class is selected at random.Find the probability that the student takes (i) atleast one of the two drinks (ii) only one of the two drinks

The graph below shows the number of students who were present on Thursday from each of the 5 groups in Ms. Meagan's class. What is the probability that a student selected at random from the class on Thrusday is in Group 4?

In a class 32 students out of 60 take tea. So find the probability of choosing randomly a student who doesn't take tea.