Question

a university has 4000 students these students are divided into four categories btech,mtech,ms,phd 3100 students joined in B.tech 350 students in mtech and 150 students in ms find the number of students entrooled in phd and find the percentage of the students in eachb category
3100 + 350 + 150 + phd = 4000
Now finish it off

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