Question

In a group of students 30 study maths, 24 study physics, 22 study
chemistry, 14 study maths only. 6 study maths and chemistry, 2
study maths and physics only and 8 study none. How many
students are in the group ? How many study chemistry only? How
many study all three subjects (Plz give appropriate answer with process)​

Answer 1

Step-by-step explanation:

: Students that studying physics , Set P=35 Students that studying chemistry , Set C = 30 Students that studying maths Set M = 40 Students are studying all the subjects,PnCnM=15 Let, PnC + CnM + PnM=x Total = P + C + M - (PnC + CnM + PnM) + (PnCnM) + Neither Or,70=35+30+40- x + 15 + 0 Or,x=120-70 Or, x=50 Hence,PnC + CnM + PnM=50 So,Exactly studying two of the subjects=50-(15*3)=5

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