Mathematical logic?

in a class of 120 students 80 students study mathematics , 45 study history and 20 students neither study history nor study mathematics. what is the n

in a class of 120 students 80 students study mathematics , 45 study history and 20 students neither study history nor study mathematics. what is the number of students who study both mathematics and history?

or:in a class of 120 students 80 students study mathematics , 45 study history and 20 students neither study history nor study mathematics. what is the number of students who study both mathematics and history?


or:25


or:25


or:25


or:25. . Correct answer. . (y)


or:25

Tags:mathematics,