Question

in a group of 50 students , 20 study subject A , 25 study subject B , and 20 study subject C , 10 study subject both A and B , 5 study both B and C , 7 study both A and C and 2 study all the subject ,find number of students how study 1)A only 2)B and C 3)A but not C 4)never of A,B,C​

Answer 1

Answer:

1.21 2. 47 3. 20 4. 44 this is your answer

Answer 2

in a group of 50 students how can you ask about 65 students