Question

 In a class of 100 students 90 have taken mathematics 70 have taken mathematics but not biology. Find the number of students who have taken biology but not mathematics. Each student has taken either mathematics or biology or both. *

30

10

15

20

​

Answer 1

Answer:

it's 10

Step-by-step explanation:

90 students have taken mathematics

so 100 - 90 = 10

so , therefore 10 students have taken biology