Question

55 student
of
a) in class
passed in
in physics
have
passed
students who
of
students
matho , 67 students
physics . The
passed
physics only is.
in​

Answer 1

Step-by-step explanation:

Let M denote the sets of students who have passed in Mathematics...

And P denote the sets of students who have passed in Physics...

Thus from the question we get :-

n(M&P) = 100

n(M) = 55

n(P) = 67

Thus n(M&P) = n(M) + n(P) - n(M&P)

         n(M&P) = 55 + 67 - 100

         n(M&P) = 22

Therefore the no. of who passed in physics only is given by :

                  = n(P) - n(M&P)

                  = 67 - 22

                  = 45

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