Question

In a group of students, 20 study Account, 21 study Mathematics, 18 study History, 7 study
Account only. 10 study Mathematics only, 6 study Account and Mathematics only and
study Mathematics and History only. If each student study at least one of the three subjects
How many students study all the subjects?
How many students are there altogether?
4
Set​

Answer 1

Answer:

16

Step-by-step explanation: