Question

out of 150 students who appeared in an examination 100 passed in physics ,120 in chemistry ,80 in Biology ,85 students passed in both Physics and Chemistry 70 students in both chemistry and Biology 60 students in both Physics and Biology and 60 passed in all the three subject find the numbers of students (a) who failed in all three subjects be (b)who passed in in only one subject see (c)who passed in Physics and Chemistry but failed in biology​

Answer 1

a) 90

b) don't know

c) 85

pls mark as brainliest answer

Answer 2

Number of who failed in all three subjects = 30

Number of students who passed in in only one subject  = 15

Number of  students who passed in Physics and Chemistry but failed in biology​ = 40

Step-by-step explanation:

Given:-

Total number of students = 150

Students passed in physics = 100

Students passed in biology = 100

Students passed in chemistry = 100

Students passed in both Physics and Chemistry = 85

Students passed in both Physics and biology = 85

Students passed in all the three subjects = 60

To find:-

(a)Number of who failed in all three subjects

(b)Number of students who passed in in only one subject

(c)Number of  students who passed in Physics and Chemistry but failed in biology​

Number of who failed in all three subjects = 30

Number of students who passed in in only one subject  = 15

Number of  students who passed in Physics and Chemistry but failed in biology​ = 40