in a class of 25 student , 12 have taken maths,8 have taken maths but not biology.find the number of student who are taken maths and biology and the number of those who have taken biology but not maths .each student have taken either maths or biology or both?

No. of total students who have taken at least one subject

No. of student who have taken math

No. of student who have taken maths but not biology

We have to find No. of student who have taken biology but not maths and who have taken both subjects.

No. of student, who have taken biology but not maths,

Hence, no. of student who has taken biology but not maths is 13.

And,

No. of student who have taken only biology,

No. of student who have taken both (Maths and Biology),

Hence, no. of student who has taken both math and biology is 4.

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