math
posted by dapo .
In a class of 50 student 28,22,20 of them offer physics,chemistry and biology respectively also,4 of them offer physics and chemistry but not biology,3 offer physic and biology but not chemistry,6 offer biology and chemistry but not physics if 13 of them offer physics only how many student in class oFfer.
At least one of the subject
Non of the three subject

(i) 14 offer physics only.
13 offer chemistry only.
12 offer biology only.
3 offer phy nd chem.
2 offer phy nd biol.
5 offer chem nd biol.
1 offers all the subjects.
(ii) 0 offers none of the subjects. 
Filling in the given information in a Venn diagram, I got
8 taking all three subjects
7 taking only Chemistry
6 taking only Biology
These were the only ones that required calculations, the rest were given.
Adding up all the entries in the Venn diagrams only comes to 44, thus of the 50 students 6 take none of the three subjects. 
Am not getting it
Respond to this Question
Similar Questions

math
A school has 63 students studying Physics, Chemistry and Biology. 33 study Physics, 25 Chemistry and 26 Biology. 10 study Physics and Chemistry, 9 study Biology and Chemistry while 8 study both Physics and Biology. Equal numbers study … 
MathStatistics
The chance that a college student has a job offer before graduation is 70%. If I sample 200 graduatesâ€¦ (use continuity correction) a) what is the chance more than 130 of them have a job offer? 
St Ann's College (DDL) Enugu
In A Class Of 60 Students, 30 Offer Physcis And 40 Offer Chemistry, (a)Use Venn Diagram To Represent This Information (b) How Many Students Offer Both Subject 
Statistic math
student is graduating from their university and has applied to jobs at company A and B. The student thinks they have a 40 % chance of a receiving an offer from company A and a 50 % chance of receiving an offer from company B. If the … 
emmanuel
in a class of 60 student,26 offer mathmatic and 28 offer physics if 8 student do not offer any of the two subject (1)how many student offer both subject. (2)how many student offer mathematic only. (3)how many student offer physics … 
Sta 112
This is my question every one . Please help me have it already I had 6 as my answer. In a class of 50 student 28,22,20 of them offer physics,chemistry and biology respectively also 4 of them offer physics and chemistry but not biology,3 … 
Math
In a class of 100 students, 40 offer Biology and 10 offer Chemistry and Biology .10 offer Physics and Chemistry , and 30 offer Physic and Biology . Each student offer at least one of the three subjects. The number of students who offer … 
mathematics
In a class of 40 students;30 offer science; 20 offer mathematics and 8 neither. a.illustrate this information on a venn diagram . b.how Many students offer both subjects. c.how many students offer exactly one subject 
maths
In a class, 22 offer maths, 21 offer English and 25 offer science. 4 students offer all three subjects and 36 offer exactly one subject. If all the students offer at least one of the subject, then how many offer two subjects? 
Statistics (elementary probability theory)
In an examination 60 candidates offer maths, 80 offer english,and 50 offer physics, if 20 offer maths & english, 15 offer english & physics, 25 offer math & physics and 10 offer all the 3. How many students entered to the examination …