IN A CLASS OF 50 STUDENTS, 30 STUDENTS LIKE MATHEMATICS, 25 LIKE SCIENCE ,AND 16 LIKE BOTH . FIND THE NO. OF STUDENTS WHO LIKE
1. EITHER MATHEMATICS OR SCIENCE
2. NEITHER MATHEMATICS NOR SCIENCE

1) Either Mathematics or Science = A U B = n(A) + n(B) - n(A intersection B )

= ( 30 + 25  ) - (!6)
= (  55 - 16  ) 
= 39 Students . 

2) Neither Mathematics Nor Science = Total no of students - A U B . 

= 50 - 39 
= 11 Students