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Out of the 60 students of a class, 29 took Mathematics, 32 took Biology and 8 took none of the twosubjects. How many students took both Mathematics and Biology?

Out of the 60 students of a class, 29 took Mathematics, 32 took Biology and 8 took none of the twosubjects. How many students took both Mathematics and Biology? Correct Answer 9

Number of students who took only Mathematics n(m) = 29Number of students who took only biology n(b) = 32Total number of students n(t) = 60Total number of students of both mathematics and biology n(m b) = 60 - 8 = 52Total number of students who took both = 32 + 29 - 52 = 9

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