Out of which 130 students informed about their hobby as ’rock climbing and 180 students informed about their hobby as sky watching. ∴ The number of students who passed at least in one of the subjects is 70.Į be the set of students who passed in English and M be the set of students who passed in Maths.Ī survey was conducted to know the hobby of 220 students of class IX. Since, none of the students failed in both subjects M be the set of students who passed in Maths. Let U be the set of students who appeared for the exam,Į be the set of students who passed in English and Balbharati solutions for Mathematics 2 Geometry 10th Standard SSC Maharashtra State Board Chapter 3 Circle Practice Set 3.1 Practice Set 3.1 Q 1 In the adjoining figure the radius of a circle with centre C is 6 cm, line AB is a tangent at A. Find the number of students who passed at least in one of the subjects ? None of them failed in both the subjects. In a competitive exam 50 students passed in English, 60 students passed in Mathematics and 40 students passed in both the subjects. ∴ The number of students who do not drink tea or coffee = n(U) – n(T ∪ C) Student who drinks tea or coffee = n(T ∪ C) = 60 + 20 + 40 = 120 Let U be the set of students in the hostel, T be the set of students who drink tea and C be the set of students who drink coffee. Number of students who do not drink tea or coffee = n(U) – n(T ∪ C) Number of students who drink Tea and Coffee = n(T ∩ C) = 20Īlso, there are 125 students in the hostel. Find the number of students who do not drink tea or coffee.
In a hostel there are 125 students, out of which 80 drink tea, 60 drink coffee and 20 drink tea and coffee both. ×189&url=https%3A%2F%2FMaharashtra State Board Class 9 Maths Solutions Chapter 1 Sets Practice Set 1.4
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